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Repository for data regarding subject vessels, including depot ships, oilers, supply ships and other support ships

Dithmarschen, German Fleet Tanker laid down 1931

Displacement: 7,335 t light; 7,641 t standard; 14,616 t normal; 20,196 t full load

Dimensions: Length overall / water x beam x draught

584.64 ft / 573.00 ft x 72.18 ft x 21.33 ft (normal load) [178.20 m / 174.65 m x 22.00 m x 6.50 m]

Armament:

4 - 4.13" / 105 mm guns (2x2 guns), 35.32lbs / 16.02kg shells, 1931 Model Dual purpose guns in deck mounts on centreline ends, evenly spread, 1 raised mount
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1931 Model Anti-aircraft guns in deck mounts on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 154 lbs / 70 kg
Shells per gun, main battery: 150

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm -
2nd: 0.79" / 20 mm 0.39" / 10 mm -

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 22,712 shp / 16,944 Kw = 21.10 kts
Range 45,000nm at 15.00 kts
Bunker at max displacement = 12,555 tons

Complement: 664 - 864

Cost: £1.606 million / $6.422 million

Distribution of weights at normal displacement:
Armament: 19 tons, 0.1 %
Armour: 13 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 13 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 679 tons, 4.6 %
Hull, fittings & equipment: 4,323 tons, 29.6 %
Fuel, ammunition & stores: 7,281 tons, 49.8 %
Miscellaneous weights: 2,300 tons, 15.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 40,482 lbs / 18,362 Kg = 1,146.1 x 4.1 " / 105 mm shells or 6.5 torpedoes
Stability (Unstable if below 1.00): 1.50
Metacentric height 6.1 ft / 1.9 m
Roll period: 12.3 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.35

Hull form characteristics:

Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.580
Length to Beam Ratio: 7.94 : 1
'Natural speed' for length: 23.94 kts
Power going to wave formation at top speed: 40 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.97 ft / 7.00 m
- Forecastle (20 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Mid (50 %): 9.84 ft / 3.00 m
- Quarterdeck (20 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m before break)
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 13.52 ft / 4.12 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 34.7 %
- Above water (accommodation/working, high = better): 83.8 %
Waterplane Area: 29,687 Square feet or 2,758 Square metres
Displacement factor (Displacement / loading): 382 %
Structure weight / hull surface area: 108 lbs/sq ft or 526 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.33
- Longitudinal: 0.93
- Overall: 1.02
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Good seaboat, rides out heavy weather easily

With 12,500 nm of fuel reserved for it's own use (3583 tons), the Dithmarschen-class ships can carry an additional 8972 tons of fuel.

2000 tons of spare parts and ammunition can be carried.
Fitted with large deck cranes and pumps to make at-sea transfers of fuel and stores easier (300 tons).

Dithmarschen purchased and converted 1932
Westerwald purchased and converted 1933
Altmark purchased and converted 1934
Uckermark purchased and converted 1935
Nordmark purchased and converted 1936
Ermland purchased and converted 1937

Donau class Fleet Supply Ship laid down 1940

Displacement: 7,935 t light; 8,427 t standard; 23,908 t normal; 36,293 t full load

Dimensions: Length overall / water x beam x draught

557.03 ft / 541.67 ft x 75.46 ft x 31.50 ft (normal load) [169.78 m / 165.10 m x 23.00 m x 9.60 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1940 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1940 Model Anti-aircraft guns in deck mounts on side, all aft
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1940 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 78 lbs / 35 kg
Shells per gun, main battery: 300

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 17,388 shp / 12,972 Kw = 18.00 kts
Range 82,000nm at 15.00 kts
Bunker at max displacement = 27,866 tons

Complement: 960 - 1,249

Cost: £2.106 million / $8.423 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.0 %
Machinery: 465 tons, 1.9 %
Hull, fittings & equipment: 4,960 tons, 20.7 %
Fuel, ammunition & stores: 15,973 tons, 66.8 %
Miscellaneous weights: 2,500 tons, 10.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 133,048 lbs / 60,349 Kg = 3,766.8 x 4.1 " / 105 mm shells or 15.0 torpedoes
Stability (Unstable if below 1.00): 1.50
Metacentric height 6.6 ft / 2.0 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle
Block coefficient: 0.650
Length to Beam Ratio: 7.18 : 1
'Natural speed' for length: 23.27 kts
Power going to wave formation at top speed: 38 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.92 ft / 7.90 m
- Forecastle (20 %): 23.95 ft / 7.30 m (21.33 ft / 6.50 m aft of break)
- Mid (50 %): 21.33 ft / 6.50 m
- Quarterdeck (15 %): 21.33 ft / 6.50 m
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 22.01 ft / 6.71 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 19.8 %
- Above water (accommodation/working, high = better): 132.5 %
Waterplane Area: 31,312 Square feet or 2,909 Square metres
Displacement factor (Displacement / loading): 682 %
Structure weight / hull surface area: 100 lbs/sq ft or 490 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.72
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of miscellaneous weight:

Provision for UNREP gear - 250 tons
Provision for refrigerated stores - 500 tons
Provision for dry and packaged stores - 750 tons
Provision for munitions - 1,000 tons

True bunkers 1,993tons for radius of 10,000 nm; remainder of bunkers used to sim POL as cargo:

Bunker fuel oil: 11,000 tons
Diesel oil: 1000 tons
Aviation petrol: 1,488 tons

Vessels in class:

Donau – Laid down 1 Jul 1940; Launched 11 Feb 1941; Completed 20 Nov 1941
Werra – Laid down 1 Jul 1940; Launched 11 Feb 1941; Completed 20 Nov 1941
Neckar - Laid down 15 Jan 1941; Launched 28 Aug 1941; Completed 6 Jun 1942
Ruhr - Laid down 15 Jan 1941; Launched 28 Aug 1941; Completed 6 Jun 1942

Wilhelm Bauer, German U-boat/Zerstorer tender laid down 1932

Displacement: 4,709 t light; 4,846 t standard; 5,993 t normal; 6,912 t full load

Dimensions: Length overall / water x beam x draught

442.91 ft / 442.91 ft x 52.49 ft x 16.40 ft (normal load) [135.00 m / 135.00 m x 16.00 m x 5.00 m]

Armament:

4 - 4.13" / 105 mm guns (2x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Dual purpose guns in deck mounts on centreline ends, evenly spread
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1928 Model Anti-aircraft guns in deck mount on centreline aft, all raised guns - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1928 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 157 lbs / 71 kg
Shells per gun, main battery: 180

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm 0.79" / 20 mm -
2nd: 0.79" / 20 mm - -
3rd: 0.79" / 20 mm - -

Machinery: Diesel Internal combustion motors, Geared drive, 2 shafts, 13,600 shp / 10,146 Kw = 21.00 kts
Range 21,000nm at 12.00 kts
Bunker at max displacement = 2,066 tons

Complement: 339 - 442

Cost: £1.079 million / $4.318 million

Distribution of weights at normal displacement:

Armament: 20 tons, 0.3 %
Armour: 13 tons, 0.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 13 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 401 tons, 6.7 %
Hull, fittings & equipment: 1,665 tons, 27.8 %
Fuel, ammunition & stores: 1,284 tons, 21.4 %
Miscellaneous weights: 2,610 tons, 43.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 9,050 lbs / 4,105 Kg = 256.2 x 4.1 " / 105 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 2.4 ft / 0.7 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 46 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 1.53

Hull form characteristics:

Hull has rise forward of midbreak
Block coefficient: 0.550
Length to Beam Ratio: 8.44 : 1
'Natural speed' for length: 21.05 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 28
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.69 ft / 6.00 m
- Forecastle (20 %): 18.86 ft / 5.75 m
- Mid (40 %): 18.86 ft / 5.75 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 14.50 ft / 4.42 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 72.4 %
- Above water (accommodation/working, high = better): 125.4 %
Waterplane Area: 16,226 Square feet or 1,507 Square metres
Displacement factor (Displacement / loading): 167 %
Structure weight / hull surface area: 69 lbs/sq ft or 336 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.15
- Overall: 1.01
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

50 tons for cranes and handling gear.
Accomodations for 450 men @ 2 tons per man - 900 tons
Meeting rooms and amenities - 500 tons
Torpedo stowage - 300 tons (150 533mm torpedos or 100 600mm torpedoes)
Ammunition/battery stowage - 360 tons
Parts & stores stowage - 200 tons
Machine shop - 300 tons

Wilhelm Bauer purchased and converted 1937
Waldemar Kophamel purchased and converted 1937
Adolf Luderitz purchased and converted 1939

Carl Peters, German S-boat tender laid down 1932

Displacement: 2,962 t light; 3,055 t standard; 3,802 t normal; 4,400 t full load

Dimensions: Length overall / water x beam x draught

344.49 ft / 344.49 ft x 47.57 ft x 14.76 ft (normal load) [105.00 m / 105.00 m x 14.50 m x 4.50 m]

Armament:

4 - 4.13" / 105 mm guns (2x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Dual purpose guns in deck mounts on centreline ends, evenly spread
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1928 Model Anti-aircraft guns in deck mount on centreline aft, all raised guns - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1928 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 157 lbs / 71 kg
Shells per gun, main battery: 180

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm 0.79" / 20 mm -
2nd: 0.79" / 20 mm - -
3rd: 0.79" / 20 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 11,351 shp / 8,468 Kw = 21.00 kts
Range 18,000nm at 12.00 kts
Bunker at max displacement = 1,344 tons

Complement: 241 - 314

Cost: £0.759 million / $3.037 million

Distribution of weights at normal displacement:

Armament: 20 tons, 0.5 %
Armour: 13 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 13 tons, 0.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 335 tons, 8.8 %
Hull, fittings & equipment: 1,095 tons, 28.8 %
Fuel, ammunition & stores: 840 tons, 22.1 %
Miscellaneous weights: 1,500 tons, 39.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 5,998 lbs / 2,721 Kg = 169.8 x 4.1 " / 105 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 2.0 ft / 0.6 m
Roll period: 14.1 seconds
Steadiness - As gun platform (Average = 50 %): 49 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 1.52

Hull form characteristics:

Hull has rise forward of midbreak
Block coefficient: 0.550
Length to Beam Ratio: 7.24 : 1
'Natural speed' for length: 18.56 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 32
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 18.86 ft / 5.75 m
- Mid (50 %): 18.86 ft / 5.75 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 15.37 ft / 4.69 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 76.2 %
- Above water (accommodation/working, high = better): 134.6 %
Waterplane Area: 11,437 Square feet or 1,063 Square metres
Displacement factor (Displacement / loading): 162 %
Structure weight / hull surface area: 62 lbs/sq ft or 302 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.87
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

50 tons for cranes and handling gear.
Accommodations for 280 men at 2 tons each - 560 tons
Meeting rooms and amenities - 300 tons
Torpedo stowage for 75 533mm torpedos - 150 tons
Ammunition stowage - 40 tons
Parts and stores stowage - 150 tons
Machine shop - 250 tons

Carl Peters purchased and converted 1938
Otto Wunsch purchased and converted 1938

Saar class U-Boat Tender laid down 1940

Displacement: 2,646 t light; 2,732 t standard; 3,623 t normal; 4,337 t full load

Dimensions: Length overall / water x beam x draught

355.96 ft / 344.49 ft x 49.21 ft x 13.12 ft (normal load) [108.50 m / 105.00 m x 15.00 m x 4.00 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1940 Model Anti-aircraft guns in deck mounts with hoists on centreline ends, evenly spread
2 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1940 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1940 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 75 lbs / 34 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.59" / 15 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.20" / 5 mm -
3rd: 0.20" / 5 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 3,959 shp / 2,954 Kw = 16.00 kts
Range 6,000nm at 10.00 kts (see notes)
Bunker at max displacement = 1,605 tons

Complement: 233 - 303

Cost: £0.692 million / $2.767 million

Distribution of weights at normal displacement:

Armament: 9 tons, 0.3 %
Armour: 3 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 106 tons, 2.9 %
Hull, fittings & equipment: 1,127 tons, 31.1 %
Fuel, ammunition & stores: 977 tons, 27.0 %
Miscellaneous weights: 1,400 tons, 38.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 8,659 lbs / 3,928 Kg = 245.2 x 4.1 " / 105 mm shells or 2.2 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 2.1 ft / 0.6 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.570
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 18.56 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 21.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (50 %): 14.76 ft / 4.50 m
- Quarterdeck (15 %): 8.20 ft / 2.50 m (14.76 ft / 4.50 m before break)
- Stern: 9.02 ft / 2.75 m
- Average freeboard: 15.25 ft / 4.65 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 54.7 %
- Above water (accommodation/working, high = better): 153.0 %
Waterplane Area: 12,056 Square feet or 1,120 Square metres
Displacement factor (Displacement / loading): 214 %
Structure weight / hull surface area: 63 lbs/sq ft or 309 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.79
- Overall: 1.03
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Fuel stores for supported U-boats are simmed as additional bunkers. Actual ship's bunkers are 164 tons for stated range of 6,000 miles. 728 tons of fuel available for transfer.

Breakdown of miscellaneous weight:

460 tons for additional crew quarters and recreational spaces
200 tons for torpedo workshop
200 tons for engineering workshop
50 tons for cranes and handling gear
490 tons for spare torpedoes, ammunition etc.


Saar – Laid down 3 Jan 1940; Launched 1 Jun 1940; Completed 16 Dec 1940

Castor, German Icebreaker Laid Down 1941

Displacement: 2,184 t light; 2,246 t standard; 3,000 t normal; 3,603 t full load

Dimensions: Length overall / water x beam x draught

199.39 ft / 187.01 ft x 49.21 ft x 20.01 ft (normal load) [60.77 m / 57.00 m x 15.00 m x 6.10 m]

Armament:

4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 7 lbs / 3 kg
Shells per gun, main battery: 400

Armour:

Belts: Width (max) Length (avg) Height (avg)
Ends: Unarmoured

Torpedo Bulkhead:
1.97" / 50 mm 187.01 ft / 57.00 m 20.01 ft / 6.10 m

Machinery:

Diesel Internal combustion generators, Electric motors, 3 shafts, 3,579 shp / 2,670 Kw = 15.00 kts
Range 20,000nm at 12.00 kts
Bunker at max displacement = 1,357 tons

Complement: 202 - 263

Cost: £0.559 million / $2.236 million

Distribution of weights at normal displacement:

Armament: 1 tons, 0.0 %
Armour: 273 tons, 9.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 273 tons, 9.1 %
- Armament: 0 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 95 tons, 3.2 %
Hull, fittings & equipment: 1,696 tons, 56.5 %
Fuel, ammunition & stores: 816 tons, 27.2 %
Miscellaneous weights: 120 tons, 4.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 22,437 lbs / 10,177 Kg = 14,517.3 x 1.5 " / 37 mm shells or 11.7 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 2.3 ft / 0.7 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 94 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle, low quarterdeck
Block coefficient: 0.570
Length to Beam Ratio: 3.80 : 1
'Natural speed' for length: 13.68 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 4.92 ft / 1.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.97 ft / 7.00 m
- Forecastle (20 %): 21.98 ft / 6.70 m (21.33 ft / 6.50 m aft of break)
- Mid (50 %): 21.33 ft / 6.50 m
- Quarterdeck (20 %): 13.12 ft / 4.00 m (21.33 ft / 6.50 m before break)
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 19.90 ft / 6.06 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 28.2 %
- Above water (accommodation/working, high = better): 131.6 %
Waterplane Area: 6,544 Square feet or 608 Square metres
Displacement factor (Displacement / loading): 509 %
Structure weight / hull surface area: 140 lbs/sq ft or 682 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.84
- Longitudinal: 26.77
- Overall: 2.40
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Torpedo bulkhead used to simulate hull strengthening to combat sea ice.

Two shafts arranged normally for propulsion; third shaft forward to back the ship off heavy ice.

Breakdown of miscellaneous weight:

20 tons reserved for Flettner Fl282 observation helicopter
80 tons reserved for helo landing pad and handling equipment
20 tons reserved for aviation stores

Vessels in class

Castor: Laid down 1 Jan 1941; Launched 31 May 1941; Completed 3 Dec 1941
Pollux: Laid down 21 Jun 1941; Launched 18 Nov 1941; Completed 23 May 1942

Typ Coronel, German Advanced Base Ship

Displacement: 9,277 t light; 9,701 t standard; 19,901 t normal; 28,062 t full load

Dimensions: Length overall / water x beam x draught

532.25 ft / 515.09 ft x 65.62 ft x 27.89 ft (normal load) [162.23 m / 157.00 m x 20.00 m x 8.50 m]

Armament:

2 - 5.04" / 128 mm guns in single mounts, 63.99lbs / 29.03kg shells, 1940 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1930 Model Antiaircraft guns in deck mounts on side, evenly spread, 2 raised mounts
Weight of broadside 142 lbs / 65 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm 0.39" / 10 mm
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery:

Diesel Internal combustion generators, Electric motors, 2 shafts, 15,948 shp / 11,897 Kw = 18.00 kts
Range 59,750nm at 15.00 kts
Bunker at max displacement = 18,361 tons

Complement: 837 - 1,089

Cost: £2.464 million / $9.857 million

Distribution of weights at normal displacement:

Armament: 18 tons, 0.1 %
Armour: 8 tons, 0.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 8 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 421 tons, 2.1 %
Hull, fittings & equipment: 4,330 tons, 21.8 %
Fuel, ammunition & stores: 10,624 tons, 53.4 %
Miscellaneous weights: 4,500 tons, 22.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 61,290 lbs / 27,800 Kg = 957.8 x 5.0 " / 128 mm shells or 6.8 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 3.2 ft / 1.0 m
Roll period: 15.4 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle
Block coefficient: 0.739
Length to Beam Ratio: 7.85: 1
'Natural speed' for length: 22.70 kts
Power going to wave formation at top speed: 40 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 4.92 ft / 1.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.25 ft / 8.00 m
- Forecastle (20 %): 24.93 ft / 7.60 m (24.28 ft / 7.40 m aft of break)
- Mid (50 %): 24.28 ft / 7.40 m
- Quarterdeck (22 %): 24.28 ft / 7.40 m
- Stern: 24.93 ft / 7.60 m
- Average freeboard: 24.59 ft / 7.49 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 33.7 %
- Above water (accommodation/working, high = better): 154.9 %
Waterplane Area: 28,038 Square feet or 2,605 Square metres
Displacement factor (Displacement / loading): 362 %
Structure weight / hull surface area: 92 lbs/sq ft or 447 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.15
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Low-stowed cargo simmed as additional bunkers

Bunkers for 15,000 nm radius at 15 knots = 2635 tons; remainder 15,725 represents low-stowed cargo

Fuel oil - 3,000 tons; Diesel oil - 3,000 tons; Aviation petrol - 3,000 tons; Fresh water - 725 tons; Dry stores 6,000 tons. Total 15,725 tons

Breakdown of miscellaneous weight:

Repair and maintenance facilities - 1000 tons
Enhanced deck handling gear - 360 tons
Four Pioneer Landing Boats with Davits - 360 tons
Two Pioneer Motor Launches with Davits - 180 tons
Pontoon causeway equipment - 600 tons
Accommodations for base force personnel (300 @ 2-tons per) - 600 tons
Recreational space and base amenities - 400 tons
Refrigerated storerooms - 1000 tons

Cost to acquire and convert as naval auxiliary - 2319 tons

Vessels in class

Coronel: Conversion begun 1 Jan 1941, conversion complete 18 May 1941
Moon-sund: Conversion begun 1 Apr 1941, conversion complete 21 Sep 1941

Typ Mittenwalde, German Victualing Store Issuing Ship

Displacement: 4,394 t light; 4,558 t standard; 7,503 t normal; 9,859 t full load

Dimensions: Length overall / water x beam x draught

372.29 ft / 357.61 ft x 50.20 ft x 21.33 ft (normal load) [113.47 m / 109.00 m x 15.30 m x 6.50 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1938 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 78 lbs / 35 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 9,668 shp / 7,213 Kw = 18.00 kts
Range 29,400nm at 15.00 kts
Bunker at max displacement = 5,301 tons

Complement: 403 - 524

Cost: £1.222 million / $4.890 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.1 %
Armour: 5 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 256 tons, 3.4 %
Hull, fittings & equipment: 1,924 tons, 25.6 %
Fuel, ammunition & stores: 3,109 tons, 41.4 %
Miscellaneous weights: 2,200 tons, 29.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 19,687 lbs / 8,930 Kg = 557.4 x 4.1 " / 105 mm shells or 3.3 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 2.0 ft / 0.6 m
Roll period: 15.1 seconds
Steadiness - As gun platform (Average = 50 %): 68 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.686
Length to Beam Ratio: 7.12 : 1
'Natural speed' for length: 18.91 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 34
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.22 ft / 8.60 m
- Forecastle (20 %): 27.56 ft / 8.40 m (26.90 ft / 8.20 m aft of break)
- Mid (50 %): 26.25 ft / 8.00 m
- Quarterdeck (25 %): 18.04 ft / 5.50 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 23.58 ft / 7.19 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 45.3 %
- Above water (accommodation/working, high = better): 163.5 %
Waterplane Area: 14,085 Square feet or 1,309 Square metres
Displacement factor (Displacement / loading): 269 %
Structure weight / hull surface area: 68 lbs/sq ft or 333 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.84
- Longitudinal: 5.07
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Low-stowed cargo simmed as additional bunkers - Normal radius 15,000 nm @ 15 knots - 2,737 tons; remaining 2,562 tons represents dry and packaged stores for transfer

Breakdown of miscellaneous weight

Cranes, winches and deck gear for underway replenishment - 200 tons
Additional evaporators and fresh water stowage - 200 tons
Refrigerated storerooms for provisions - 1800 tons

Cost to outfit as a naval auxiliary - 1,099 tons.

Vessels in class

Mittenwalde: Conversion begun 1 Jan 1941, conversion complete 11 April 1941
Eichwalde: Conversion begun 1 Apr 1941, conversion complete 10 Jul 1941

Typ 1941 German Minelayer Support Vessel

Displacement: 5,581 t light; 5,806 t standard; 10,900 t normal; 14,975 t full load

Dimensions: Length overall / water x beam x draught

418.27 ft / 406.82 ft x 55.12 ft x 24.28 ft (normal load) [127.49 m / 124.00 m x 16.80 m x 7.40 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1938 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, 1 raised mount
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 78 lbs / 35 kg
Shells per gun, main battery: 150

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 7,494 shp / 5,590 Kw = 16.00 kts
Range 60,000nm at 13.00 kts
Bunker at max displacement = 9,169 tons

Complement: 533 - 693

Cost: £1.430 million / $5.718 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.1 %
Machinery: 198 tons, 1.8 %
Hull, fittings & equipment: 2,224 tons, 20.4 %
Fuel, ammunition & stores: 5,319 tons, 48.8 %
Miscellaneous weights: 3,150 tons, 28.9 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 26,664 lbs / 12,095 Kg = 754.9 x 4.1 " / 105 mm shells or 4.3 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 2.4 ft / 0.7 m
Roll period: 14.8 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.701
Length to Beam Ratio: 7.38: 1
'Natural speed' for length: 20.17 kts
Power going to wave formation at top speed: 40 %
Trim (Max stability = 0, Max steadiness = 100): 38
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.97 ft / 7.00 m
- Forecastle (20 %): 22.97 ft / 7.00 m
- Mid (50 %): 16.40 ft / 5.00 m
- Quarterdeck (15 %): 16.40 ft / 5.00 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 18.70 ft / 5.70 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 39.3 %
- Above water (accommodation/working, high = better): 114.4 %
Waterplane Area: 17,867 Square feet or 1,660 Square metres
Displacement factor (Displacement / loading): 301 %
Structure weight / hull surface area: 76 lbs/sq ft or 369 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.97
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Low stowed cargo simmed as additional bunkers.

Radius 15,000 nm at 13 knots = 2,366 tons; Fuel oil carried in deep tanks for transfer to other vessels = 3,806 tons; Dry stores and cargo = 3,000 tons. Total 9,169 tons

Breakdown of miscellaneous weight

Enhanced deck handling gear (cranes, winches etc) = 400 tons
Mine storage = 725 tons
Provision for nets, booms and buoys as cargo = 800 tons
Workshops and facilities = 500 tons
Accommodations and amenities for supported vessels = 800 tons

Cost to acquire and convert as naval auxiliary = 1395 tons

Radetzky: Conversion begun 1 Jan 1941, conversion complete 20 Apr 1941

Typ Sachsenwald, German Armament Store Issuing Ship laid down 1941

Displacement: 4,394 t light; 4,558 t standard; 7,503 t normal; 9,859 t full load

Dimensions: Length overall / water x beam x draught

372.29 ft / 357.61 ft x 50.20 ft x 21.33 ft (normal load) [113.47 m / 109.00 m x 15.30 m x 6.50 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1940 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 78 lbs / 35 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 9,668 shp / 7,213 Kw = 18.00 kts
Range 29,400nm at 15.00 kts
Bunker at max displacement = 5,301 tons

Complement: 403 - 524

Cost: £1.222 million / $4.890 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.1 %
Armour: 5 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 256 tons, 3.4 %
Hull, fittings & equipment: 1,924 tons, 25.6 %
Fuel, ammunition & stores: 3,109 tons, 41.4 %
Miscellaneous weights: 2,200 tons, 29.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 19,687 lbs / 8,930 Kg = 557.4 x 4.1 " / 105 mm shells or 3.3 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 2.0 ft / 0.6 m
Roll period: 15.1 seconds
Steadiness - As gun platform (Average = 50 %): 68 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.686
Length to Beam Ratio: 7.12: 1
'Natural speed' for length: 18.91 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 34
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.22 ft / 8.60 m
- Forecastle (20 %): 27.56 ft / 8.40 m (26.90 ft / 8.20 m aft of break)
- Mid (50 %): 26.25 ft / 8.00 m
- Quarterdeck (25 %): 18.04 ft / 5.50 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 23.58 ft / 7.19 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 45.3 %
- Above water (accommodation/working, high = better): 163.5 %
Waterplane Area: 14,085 Square feet or 1,309 Square metres
Displacement factor (Displacement / loading): 269 %
Structure weight / hull surface area: 68 lbs/sq ft or 333 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.84
- Longitudinal: 5.07
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Low-stowed cargo simmed as additional bunkers - Normal radius 15,000 nm @ 15 knots - 2,737 tons; remaining 2,500 tons represents munitions and other ordnance stores for transfer

Breakdown of miscellaneous weight

Cranes, winches and deck gear for underway replenishment - 300 tons
Enhanced damage control and fire suppression systems - 300 tons
Ammunition handling and maintenance spaces - 1600 tons

Cost to outfit as a naval auxiliary - 1,099 tons

Vessels in class

Sachsenwald - Conversion begun 1 Apr 1941; conversion complete 10 Jul 1941
Stiegerwald - Conversion begun 1 Jul 1941; conversion complete 9 Oct 1941

Netlayer Typ 1941 Rev B – German Netlayer/Harbour Defence Craft

Displacement: 455 t light; 466 t standard; 537 t normal; 594 t full load

Dimensions: Length overall / water x beam x draught

146.90 ft / 144.36 ft x 24.61 ft x 11.48 ft (normal load) [44.78 m / 44.00 m x 7.50 m x 3.50 m]

Armament:

1 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft gun in deck mount on centreline aft
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1928 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 2 lbs / 1 kg
Shells per gun, main battery: 450

Armour:

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -

Machinery:

Coal fired boilers, complex reciprocating steam engines, Direct drive, 1 shaft, 1,232 ihp / 919 Kw = 15.00 kts
Range 4,800nm at 10.00 kts
Bunker at max displacement = 127 tons (100% coal)

Complement: 55 - 72

Cost: £0.164 million / $0.657 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0.0 %
Armour: 0 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 74 tons, 13.9 %
Hull, fittings & equipment: 260 tons, 48.4 %
Fuel, ammunition & stores: 82 tons, 15.3 %
Miscellaneous weights: 120 tons, 22.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 760 lbs / 345 Kg = 491.5 x 1.5 " / 37 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.6 ft / 0.2 m
Roll period: 13.3 seconds
Steadiness - As gun platform (Average = 50 %): 57 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 1.54

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.461
Length to Beam Ratio: 5.87 : 1
'Natural speed' for length: 12.01 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 37
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.44 ft / 4.40 m
- Forecastle (20 %): 9.51 ft / 2.90 m
- Mid (50 %): 8.53 ft / 2.60 m
- Quarterdeck (15 %): 8.53 ft / 2.60 m
- Stern: 8.53 ft / 2.60 m
- Average freeboard: 9.27 ft / 2.83 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 70.5 %
- Above water (accommodation/working, high = better): 66.2 %
Waterplane Area: 2,183 Square feet or 203 Square metres
Displacement factor (Displacement / loading): 198 %
Structure weight / hull surface area: 60 lbs/sq ft or 294 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.58
- Longitudinal: 9.51
- Overall: 1.89
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of Miscellaneous Weight:

110 tons for netlaying equipment
10 tons reserved for design growth or war modification

Vessels in class

Norderney - Laid down 1 Apr 1941; Launched 26 May 1941; Completed 14 August 1941
Baltrum - Laid down 1 Apr 1941; Launched 26 May 1941; Completed 14 August 1941
Juist - Laid down 1 Jul 1941; Launched 25 Aug 1941; Completed 13 November 1941
Memmert - Laid down 1 Jul 1941; Launched 25 Aug 1941; Completed 13 Nov 1941
Halligen - Laid down 1 Oct 1941; Launched 25 Nov 1941; Completed 13 Feb 1942
Amrun - Laid down 1 Oct 1941; Launched 25 Nov 1941; Completed 13 Feb 1942

Fleet Tug Typ 1941 Fleet Tug Rev B – German Fleet Tug

Displacement: 684 t light; 702 t standard; 849 t normal; 967 t full load

Dimensions: Length overall / water x beam x draught

138.10 ft / 135.50 ft x 29.00 ft x 12.01 ft (normal load) [42.09 m / 41.30 m x 8.84 m x 3.66 m]

Armament:

1 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft gun in deck mount on centreline forward, 1 raised gun
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1928 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts – superfiring
Weight of broadside 2 lbs / 1 kg
Shells per gun, main battery: 450

Armour:

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -

Machinery:

Oil fired boilers, complex reciprocating steam engines, Geared drive, 1 shaft, 1,424 ihp / 1,062 Kw = 14.00 kts
Range 10,000nm at 10.00 kts
Bunker at max displacement = 265 tons

Complement: 78 - 102

Cost: £0.217 million / $0.868 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0.0 %
Armour: 0 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 78 tons, 9.2 %
Hull, fittings & equipment: 505 tons, 59.5 %
Fuel, ammunition & stores: 165 tons, 19.4 %
Miscellaneous weights: 100 tons, 11.8 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 1,964 lbs / 891 Kg = 1,270.8 x 1.5 " / 37 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 0.9 ft / 0.3 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 47 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.15

Hull form characteristics:

Hull has raised quarterdeck
Block coefficient: 0.630
Length to Beam Ratio: 4.67 : 1
'Natural speed' for length: 11.64 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 38
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.76 ft / 4.50 m
- Forecastle (20 %): 14.76 ft / 4.50 m
- Mid (50 %): 8.20 ft / 2.50 m
- Quarterdeck (15 %): 9.02 ft / 2.75 m (8.20 ft / 2.50 m before break)
- Stern: 9.02 ft / 2.75 m
- Average freeboard: 10.62 ft / 3.24 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 44.3 %
- Above water (accommodation/working, high = better): 68.9 %
Waterplane Area: 2,905 Square feet or 270 Square metres
Displacement factor (Displacement / loading): 328 %
Structure weight / hull surface area: 100 lbs/sq ft or 489 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 2.35
- Longitudinal: 15.44
- Overall: 2.84
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped

Breakdown of miscellaneous weight

40 tons for salvage crane and associated equipment
30 tons for towing gear
20 tons for high pressure pumps and fire-fighting equipment
10 tons for diving bell and submarine rescue equipment


Vessels in class:

Wangerooge - Laid down 21 Jul 1941; launched 15 Nov 1941; Completed 8 May 1942
Spicherooge - Laid down 21 Jul 1941; launched 15 Nov 1941; Completed 8 May 1942
Langoog - Laid down 2 Dec 1941; 29 May 1942; Completed 19 Sep 1942
Norderoog - Laid down 2 Dec 1941; 29 May 1942; Completed 19 Sep 1942

Survey Ship Typ 1941 Rev A German Survey Ship

Displacement: 593 t light; 618 t standard; 850 t normal; 1,036 t full load

Dimensions: Length overall / water x beam x draught

253.37 ft / 242.13 ft x 28.22 ft x 10.50 ft (normal load) [77.23 m / 73.80 m x 8.60 m x 3.20 m]

Armament:

2 - 3.46" / 88.0 mm guns (1x2 guns), 20.79lbs / 9.43kg shells, 1935 Model Anti-aircraft guns in deck mount on centreline forward
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mount on centreline aft, all raised guns – superfiring
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1928 Model Anti-aircraft guns in deck mounts on side, evenly spread, 2 raised mounts
Weight of broadside 46 lbs / 21 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 3,911 shp / 2,918 Kw = 20.00 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 418 tons

Complement: 78 - 102

Cost: £0.247 million / $0.990 million

Distribution of weights at normal displacement:

Armament: 6 tons, 0.7 %
Armour: 3 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 103 tons, 12.2 %
Hull, fittings & equipment: 351 tons, 41.2 %
Fuel, ammunition & stores: 257 tons, 30.3 %
Miscellaneous weights: 130 tons, 15.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 2,011 lbs / 912 Kg = 96.7 x 3.5 " / 88 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 0.9 ft / 0.3 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak
Block coefficient: 0.415
Length to Beam Ratio: 8.58: 1
'Natural speed' for length: 15.56 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 26.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.69 ft / 6.00 m
- Forecastle (20 %): 18.70 ft / 5.70 m (18.04 ft / 5.50 m aft of break)
- Mid (40 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (25 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 13.33 ft / 4.06 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 62.8 %
- Above water (accommodation/working, high = better): 132.9 %
Waterplane Area: 4,245 Square feet or 394 Square metres
Displacement factor (Displacement / loading): 220 %
Structure weight / hull surface area: 38 lbs/sq ft or 187 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.83
- Longitudinal: 5.17
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of miscellaneous weight

60 tons reserved for survey/research crew quarters - @ 3 tons per person
40 tons reserved for additional deck handling gear - cranes, winches, sounding gear - and echo sounding equipment
30 tons reserved for installation of AS gear for wartime

Vessels in class

Komet - Laid down 1 Jul 1941; Launched 25 Oct 1941; Completed 15 Apr 1942
Meteor - Laid down 16 Nov 1941; Launched 12 Mar 1942; Completed 31 Aug 1942

Tanker R, German Support Tanker laid down 1942

Displacement: 1,952 t light; 2,087 t standard; 6,700 t normal; 10,390 t full load

Dimensions: Length overall / water x beam x draught

366.07 ft / 355.97 ft x 45.93 ft x 20.18 ft (normal load) [111.58 m / 108.50 m x 14.00 m x 6.15 m]

Armament:

2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mount on centreline aft
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, all aft
Weight of broadside 4 lbs / 2 kg
Shells per gun, main battery: 500

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 9,016 shp / 6,726 Kw = 18.00 kts
Range 50,000nm at 15.00 kts
Bunker at max displacement = 8,304 tons

Complement: 369 - 481

Cost: £0.647 million / $2.588 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0.0 %
Machinery: 236 tons, 3.5 %
Hull, fittings & equipment: 1,416 tons, 21.1 %
Fuel, ammunition & stores: 4,748 tons, 70.9 %
Miscellaneous weights: 300 tons, 4.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 44,183 lbs / 20,041 Kg = 28,588.0 x 1.5 " / 37 mm shells or 9.8 torpedoes
Stability (Unstable if below 1.00): 1.68
Metacentric height 3.7 ft / 1.1 m
Roll period: 10.1 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.711
Length to Beam Ratio: 7.75: 1
'Natural speed' for length: 18.87 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 16.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.79 ft / 7.25 m
- Forecastle (15 %): 22.31 ft / 6.80 m (21.33 ft / 6.50 m aft of break)
- Mid (50 %): 13.12 ft / 4.00 m
- Quarterdeck (15 %): 21.33 ft / 6.50 m (13.12 ft / 4.00 m before break)
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 17.26 ft / 5.26 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 18.2 %
- Above water (accommodation/working, high = better): 103.1 %
Waterplane Area: 13,163 Square feet or 1,223 Square metres
Displacement factor (Displacement / loading): 865 %
Structure weight / hull surface area: 62 lbs/sq ft or 305 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.23
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Low stowed cargo simmed as additional bunkers. Normal radius is 6,000 nm at 15 knots.

Breakdown of low-stowed cargo: 3,000 tons bunker fuel oil, 880 tons diesel oil, 150 tons aviation spirit

Breakdown of miscellaneous weight:

120 tons reserved for deck gear and equipment for underway replenishment
100 tons reserved for provisions and other stores
80 tons reserved for munitions


Lahn – Laid down 1 Jan 1942; Launched 13 May 1942; Completed 27 Nov 1942
Lech – Laid down 1 Jan 1942; Launched 13 May 1942; Completed 27 Nov 1942

Typ Cunewalde, German Naval Store Carrier laid down 1939




Displacement: 2,505 t light; 2,626 t standard; 5,819 t normal; 8,373 t full load

Dimensions: Length overall / water x beam x draught

344.44 ft / 321.52 ft x 44.95 ft x 19.85 ft (normal load) [104.98 m / 98.00 m x 13.70 m x 6.05 m]

Armament:

1 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1938 Model Anti-aircraft gun in deck mount on centreline aft
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mount on centreline aft, all raised guns – superfiring
2 - 0.79" / 20.0 mm guns (1x2 guns), 0.24lbs / 0.11kg shells, 1938 Model Anti-aircraft guns in deck mount on centreline forward, all raised guns - superfiring
Weight of broadside 39 lbs / 18 kg
Shells per gun, main battery: 200

Machinery:

Oil fired boilers, complex reciprocating steam engines, Geared drive, 1 shaft, 1,898 ihp / 1,416 Kw = 12.00 kts
Range 77,700nm at 10.00 kts
Bunker at max displacement = 5,747 tons

Complement: 333 - 433

Cost: £0.619 million / $2.477 million

Distribution of weights at normal displacement:

Armament: 5 tons, 0.1 %
Machinery: 105 tons, 1.8 %
Hull, fittings & equipment: 1,516 tons, 26.0 %
Fuel, ammunition & stores: 3,314 tons, 56.9 %
Miscellaneous weights: 880 tons, 15.1 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 30,073 lbs / 13,641 Kg = 851.4 x 4.1 " / 105 mm shells or 6.4 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 2.3 ft / 0.7 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.710
Length to Beam Ratio: 7.15: 1
'Natural speed' for length: 17.93 kts
Power going to wave formation at top speed: 32 %
Trim (Max stability = 0, Max steadiness = 100): 30
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 8.20 ft / 2.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36.42 ft / 11.10 m
- Forecastle (20 %): 31.17 ft / 9.50 m
- Mid (50 %): 19.69 ft / 6.00 m
- Quarterdeck (15 %): 19.69 ft / 6.00 m
- Stern: 19.69 ft / 6.00 m
- Average freeboard: 24.12 ft / 7.35 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 24.6 %
- Above water (accommodation/working, high = better): 148.5 %
Waterplane Area: 11,625 Square feet or 1,080 Square metres
Displacement factor (Displacement / loading): 516 %
Structure weight / hull surface area: 59 lbs/sq ft or 287 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.81
- Longitudinal: 7.38
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Low-stowed cargo simmed as additional fuel - true bunkers 932 tons; low-stowed cargo 4,400 tons

Breakdown of Miscellaneous Weight:

180 tons - living and recreational spaces for additional crews
700 tons - heavy lift cargo gear

Converted merchantman, laid down 1939

Cost to convert – 627 tons
Time of conversion – 87 days


Cunewalde – Conversion begun 1 Jan 1942; conversion complete 29 Mar 1942
Furstenwalde – Conversion begun 1 Jan 1942; conversion complete 29 Mar 1942


My thanks to ALVAMA for his permission to utilize his original drawing.

Deutsche Werft Typ 3, German Oil Tanker (Fleet Oiler) laid down 1940

Displacement: 6,191 t light; 6,677 t standard; 23,645 t normal; 37,219 t full load

Dimensions: Length overall / water x beam x draught

552.81 ft / 541.34 ft x 75.46 ft x 31.17 ft (normal load) [168.50 m / 165.00 m x 23.00 m x 9.50 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1940 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1940 Model Anti-aircraft guns in deck mounts on centreline, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1940 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 78 lbs / 35 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 17,280 shp / 12,891 Kw = 18.00 kts
Range 90,500nm at 15.00 kts
Bunker at max displacement = 30,541 tons

Complement: 953 - 1,239

Cost: £1.737 million / $6.949 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.0 %
Armour: 5 tons, 0.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 462 tons, 2.0 %
Hull, fittings & equipment: 4,824 tons, 20.4 %
Fuel, ammunition & stores: 17,454 tons, 73.8 %
Miscellaneous weights: 890 tons, 3.8 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 229,185 lbs / 103,957 Kg = 6,488.6 x 4.1 " / 105 mm shells or 26.6 torpedoes
Stability (Unstable if below 1.00): 1.95
Metacentric height 9.5 ft / 2.9 m
Roll period: 10.3 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.650
Length to Beam Ratio: 7.17: 1
'Natural speed' for length: 23.27 kts
Power going to wave formation at top speed: 38 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.61 ft / 7.50 m
- Forecastle (20 %): 20.34 ft / 6.20 m
- Mid (50 %): 20.34 ft / 6.20 m
- Quarterdeck (15 %): 20.34 ft / 6.20 m
- Stern: 20.34 ft / 6.20 m
- Average freeboard: 20.68 ft / 6.30 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 12.7 %
- Above water (accommodation/working, high = better): 127.2 %
Waterplane Area: 31,293 Square feet or 2,907 Square metres
Displacement factor (Displacement / loading): 1,000 %
Structure weight / hull surface area: 99 lbs/sq ft or 484 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.59
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of miscellaneous weight:

Strengthened handling gear, booms, pumps for refueling at sea: 390 tons
Storerooms for dry provisions and supplies: 300 tons
Storerooms for packaged POL products: 200 tons

True bunkers 2,539 tons for radius of 13,000 nm; remainder of bunkers used to sim POL as cargo: 14,428 tons

Cost of conversion: 1,548 tons; time for conversion 114 days


Siegerland – Conversion begun 1 Jan 1942; conversion complete 25 Apr 1942
Sauerland - Conversion begun 1 Apr 1942; conversion complete 24 Jul 1942
Schwabenland - Conversion begun 1 Jul 1942; conversion complete 23 Oct 1942
Samland - Conversion begun 1 Jul 1942; conversion complete 23 Oct 1942
Markgräflerland - Conversion begun 1 Jan 1943; conversion complete 25 Apr 1943
Mindenerland - Conversion begun 1 Jan 1943; conversion complete 25 Apr 1943
Memelland - Conversion begun 1 Jul 1943; Conversion complete 23 Oct 1943
Munsterland - Conversion begun 1 Jul 1943; Conversion complete 23 Oct 1943
Ammerland - Conversion begun 1 Jan 1944; Conversion complete 24 Apr 1944
Frankenland - Conversion begun 1 Jan 1944; Conversion complete 24 Apr 1944
Jeverland - Conversion begun 1 July 1944; Conversion complete 23 October 1944
Wendland - Conversion begun 1 July 1944; Conversion complete 23 October 1944
Oderland - Conversion begun 1 January 1945; Conversion complete 25 April 1945
Burgenland - Conversion begun 1 July 1945; Conversion complete 23 October 1945
Havelland - Conversion begun 1 April 1946; Conversion complete 24 July 1946
Lipperland - Conversion begun 1 July 1946; Conversion complete 23 October 1946
Hessenland - Conversion begun 1 January 1948; Conversion complete 28 April 1948
Kulmerland - Conversion begun 1 January 1948; Conversion complete 28 April 1948

Typ Tanga, German Aviation Support Ship laid down 1942




Displacement: 6,857 t light; 7,198 t standard; 16,623 t normal; 24,163 t full load

Dimensions: Length overall / water x beam x draught

452.86 ft / 439.30 ft x 61.02 ft x 31.00 ft (normal load) [138.03 m / 133.90 m x 18.60 m x 9.45 m]

Armament:

2 - 3.46" / 88.0 mm guns in single mounts, 20.79lbs / 9.43kg shells, 1938 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 48 lbs / 22 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: - 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 9,506 shp / 7,092 Kw = 16.00 kts
Range 73,250nm at 14.00 kts
Bunker at max displacement = 16,964 tons

Complement: 731 - 951

Cost: £1.780 million / $7.122 million

Distribution of weights at normal displacement:

Armament: 6 tons, 0.0 %
Armour: 3 tons, 0.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 248 tons, 1.5 %
Hull, fittings & equipment: 3,250 tons, 19.6 %
Fuel, ammunition & stores: 9,766 tons, 58.7 %
Miscellaneous weights: 3,350 tons, 20.2 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 56,764 lbs / 25,748 Kg = 2,730.0 x 3.5 " / 88 mm shells or 7.5 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 3.2 ft / 1.0 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle
Block coefficient: 0.700
Length to Beam Ratio: 7.20: 1
'Natural speed' for length: 20.96 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 2.46 ft / 0.75 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.79 ft / 7.25 m
- Forecastle (20 %): 22.64 ft / 6.90 m (21.98 ft / 6.70 m aft of break)
- Mid (50 %): 21.98 ft / 6.70 m
- Quarterdeck (20 %): 21.98 ft / 6.70 m
- Stern: 21.98 ft / 6.70 m
- Average freeboard: 22.20 ft / 6.77 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 28.6 %
- Above water (accommodation/working, high = better): 122.2 %
Waterplane Area: 21,343 Square feet or 1,983 Square metres
Displacement factor (Displacement / loading): 427 %
Structure weight / hull surface area: 86 lbs/sq ft or 420 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.63
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Low-stowed cargo simmed as additional bunkers

Bunkers for 15,000 nm radius at 14 knots = 1996 tons; remainder represents low-stowed cargo

Aviation fuels - 4,600 tons; Fresh water - 1,500 tons; Diesel oil 2,000 tons; Dry stores - 5,000 tons. Total 13,100 tons

Breakdown of miscellaneous weight:

Two 56-ton catapults and handling equipment - 250 tons
Repair and maintenance facilities - 1000 tons
Enhanced deck handling gear - 350 tons
Provision for ten embarked seaplanes - 250 tons
Storerooms for spares, equipment and ordnance - 800 tons
Accommodations for aircraft repair and service personnel (250 @ 2-tons per) - 500 tons
Accommodations for embarked air crew (100 @ 2-tons per) - 200 tons
Recreational spaces and amenities - 300 tons

Cost to acquire and convert as naval auxiliary - 1715 tons
Time to convert - 120 days


Tanga – Conversion begun 1 Jan 1942; conversion complete 1 May 1942
Tsingtau - Conversion begun 1 July 1942; conversion complete 29 Oct 1942

Tender B German Fleet Repair and Support Ship laid down 1942

Displacement: 6,238 t light; 6,472 t standard; 11,003 t normal; 14,627 t full load

Dimensions: Length overall / water x beam x draught

423.30 ft / 406.82 ft x 56.76 ft x 23.62 ft (normal load) [129.02 m / 124.00 m x 17.30 m x 7.20 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1940 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, 1 raised mount
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, all amidships
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 78 lbs / 35 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery: Diesel Internal combustion motors, Geared drive, 1 shaft, 4,665 shp / 3,480 Kw = 14.00 kts
Range 64,800nm at 12.00 kts
Bunker at max displacement = 8,155 tons

Complement: 536 - 698

Cost: £1.550 million / $6.200 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.1 %
Armour: 5 tons, 0.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 122 tons, 1.1 %
Hull, fittings & equipment: 2,302 tons, 20.9 %
Fuel, ammunition & stores: 4,764 tons, 43.3 %
Miscellaneous weights: 3,800 tons, 34.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 25,255 lbs / 11,455 Kg = 715.0 x 4.1 " / 105 mm shells or 3.9 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 2.5 ft / 0.8 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle, rise forward of midbreak
Block coefficient: 0.706
Length to Beam Ratio: 7.17: 1
'Natural speed' for length: 20.17 kts
Power going to wave formation at top speed: 33 %
Trim (Max stability = 0, Max steadiness = 100): 29
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.23 ft / 8.30 m
- Forecastle (20 %): 26.25 ft / 8.00 m (25.26 ft / 7.70 m aft of break)
- Mid (50 %): 17.06 ft / 5.20 m (16.40 ft / 5.00 m aft of break)
- Quarterdeck (15 %): 16.40 ft / 5.00 m
- Stern: 17.06 ft / 5.20 m
- Average freeboard: 19.93 ft / 6.07 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 43.1 %
- Above water (accommodation/working, high = better): 122.3 %
Waterplane Area: 18,498 Square feet or 1,719 Square metres
Displacement factor (Displacement / loading): 267 %
Structure weight / hull surface area: 76 lbs/sq ft or 369 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.14
- Overall: 1.00
Hull space for machinery, storage, and compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Bunkers include fuel storage for other vessels.
Range = 12,000 nm on 1,591 tons; remainder, 6,000 tons, represents fuel oil carried for transfer.


Breakdown of Miscellaneous Weight

Cranes and heavy handling equipment - 500 tons
Accommodation for repair personnel - 800 tons
Engine repair shop - including tools and equipment - 700 tons
Hull repair shop - including tools and equipment - 700 tons
Ordnance repair shop - including tools and equipment - 700 tons
Boat repair shop - including tools and equipment - 400 tons

Cost to acquire and convert @25% - 1,560 tons; time to convert - 118 days


Cyclop – Conversion begun 1 Jan 1942; conversion complete 29 Apr 1942
Vulkan - Conversion begun 1 Jul 1942; conversion complete 27 Oct 1942

Typ 1943 Fleet Tender, German Multipurpose Depot Ship laid down 1942

Displacement: 6,857 t light; 7,198 t standard; 16,623 t normal; 24,163 t full load

Dimensions: Length overall / water x beam x draught

452.86 ft / 439.30 ft x 61.02 ft x 31.00 ft (normal load) [138.03 m / 133.90 m x 18.60 m x 9.45 m]

Armament:

2 - 3.46" / 88.0 mm guns in single mounts, 20.79lbs / 9.43kg shells, 1938 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 48 lbs / 22 kg
Shells per gun, main battery: 300

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: - 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 9,506 shp / 7,092 Kw = 16.00 kts
Range 73,250nm at 14.00 kts
Bunker at max displacement = 16,964 tons

Complement: 731 - 951

Cost: £1.780 million / $7.122 million

Distribution of weights at normal displacement:

Armament: 6 tons, 0.0 %
Armour: 3 tons, 0.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 248 tons, 1.5 %
Hull, fittings & equipment: 3,250 tons, 19.6 %
Fuel, ammunition & stores: 9,766 tons, 58.7 %
Miscellaneous weights: 3,350 tons, 20.2 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 56,764 lbs / 25,748 Kg = 2,730.0 x 3.5 " / 88 mm shells or 7.5 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 3.2 ft / 1.0 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle
Block coefficient: 0.700
Length to Beam Ratio: 7.20: 1
'Natural speed' for length: 20.96 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 2.46 ft / 0.75 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.79 ft / 7.25 m
- Forecastle (20 %): 22.64 ft / 6.90 m (21.98 ft / 6.70 m aft of break)
- Mid (50 %): 21.98 ft / 6.70 m
- Quarterdeck (20 %): 21.98 ft / 6.70 m
- Stern: 21.98 ft / 6.70 m
- Average freeboard: 22.20 ft / 6.77 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 28.6 %
- Above water (accommodation/working, high = better): 122.2 %
Waterplane Area: 21,343 Square feet or 1,983 Square metres
Displacement factor (Displacement / loading): 427 %
Structure weight / hull surface area: 86 lbs/sq ft or 420 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.63
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Low-stowed cargo simmed as additional bunkers

Bunkers for 15,000 nm radius at 14 knots = 1996 tons; remainder represents low-stowed cargo

Fuel oil - 8,000 tons; Diesel oil - 2,000 tons; Fresh water - 500 tons; Dry stores - 1,500 tons. Total 12,000 tons

Breakdown of miscellaneous weight:

Cranes and heavy handling equipment - 200 tons
Accommodation for service personnel - 800 tons
Electrical/electronics shop - 400 tons
Metalsmithing shop - 400 tons
Engine maintenance shop - 400 tons
Ordnance maintenance shop - 400 tons
Boat maintenance shop - 400 tons
Water distillation equipment - 150 tons
Enhanced medical facilities - 200 tons

Cost to acquire and convert as naval auxiliary - 1715 tons
Time to convert - 120 days


Gustav Nachtigal - Conversion commenced 1 Jan 1943; Conversion complete 1 May 1943
Hermann von Wissman - Conversion commenced 1 Jul 1943; Conversion complete 29 October 1943
Adolph von Hansemann - Conversion commenced 1 Jan 1944; Conversion complete 30 April 1944
Lothar von Trotha - Conversion commenced 1 Jul 1944; Conversion complete 29 October 1944
Curt von François - Conversion commenced 1 Jan 1945; Conversion complete 1 May 1945
Albrecht von Stosch - Conversion commenced 1 Jul 1945; Conversion complete 29 October 1945