WesWorld

Repository for the subject matter, new ship designs

Blankenhagen, German Harbor Tug laid down 1950

Displacement: 436 t light; 446 t standard; 491 t normal; 527 t full load

Dimensions: Length overall / water x beam x draught

180.34 ft / 174.87 ft x 30.02 ft x 6.23 ft (normal load) [54.97 m / 53.30 m x 9.15 m x 1.90 m]

Armament:

2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1950 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 500

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 647 shp / 482 Kw = 13.00 kts
Range 6,000nm at 10.00 kts
Bunker at max displacement = 80 tons

Complement: 51 - 67

Cost: £0.137 million / $0.547 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0.0 %
Machinery: 15 tons, 3.2 %
Hull, fittings & equipment: 341 tons, 69.4 %
Fuel, ammunition & stores: 55 tons, 11.1 %
Miscellaneous weights: 80 tons, 16.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 3,735 lbs / 1,694 Kg = 15,301.5 x 0.8 " / 20 mm shells or 2.5 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 1.1 ft / 0.3 m
Roll period: 12.2 seconds
Steadiness - As gun platform (Average = 50 %): 68 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has low quarterdeck
Block coefficient: 0.525
Length to Beam Ratio: 5.83: 1
'Natural speed' for length: 13.22 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 34
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.04 ft / 5.50 m
- Forecastle (15 %): 18.04 ft / 5.50 m
- Mid (25 %): 14.76 ft / 4.50 m
- Quarterdeck (60 %): 6.56 ft / 2.00 m (14.76 ft / 4.50 m before break)
- Stern: 6.56 ft / 2.00 m
- Average freeboard: 10.50 ft / 3.20 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 29.6 %
- Above water (accommodation/working, high = better): 206.1 %
Waterplane Area: 3,579 Square feet or 333 Square meters
Displacement factor (Displacement / loading): 440 %
Structure weight / hull surface area: 63 lbs/sq ft or 310 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.47
- Longitudinal: 5.74
- Overall: 1.69
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

Breakdown of Miscellaneous Weight

Two auxiliary diesel-electric generating sets - 20 tons each - total 40 tons
Provision for stowed towing cables and winch aft - 30 tons
Navigation and communications equipment - 10 tons

Aichwaldsee, German Minesweeper laid down 1950

Displacement: 463 t light; 477 t standard; 535 t normal; 582 t full load

Dimensions: Length overall / water x beam x draught

184.40 ft / 180.45 ft x 30.51 ft x 8.20 ft (normal load) [56.21 m / 55.00 m x 9.30 m x 2.50 m]

Armament:

1 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1950 Model Anti-aircraft gun in deck mount on centerline forward
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1950 Model Anti-aircraft guns in deck mount on centerline aft, all raised guns - superfiring
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1950 Model Anti-aircraft guns in deck mounts on centerline, all amidships, all raised mounts - superfiring
Weight of broadside 39 lbs / 18 kg
Shells per gun, main battery: 150

Armor:

Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.59" / 15 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -

Conning tower: 0.98" / 25 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 1,414 shp / 1,054 Kw = 16.00 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 105 tons

Complement: 55 - 72

Cost: £0.196 million / $0.784 million

Distribution of weights at normal displacement:

Armament: 5 tons, 0.9 %
Armor: 3 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.4 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.3 %
Machinery: 34 tons, 6.3 %
Hull, fittings & equipment: 320 tons, 59.9 %
Fuel, ammunition & stores: 73 tons, 13.6 %
Miscellaneous weights: 100 tons, 18.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 1,551 lbs / 704 Kg = 43.9 x 4.1 " / 105 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.0 ft / 0.3 m
Roll period: 12.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 1.55

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.415
Length to Beam Ratio: 5.91: 1
'Natural speed' for length: 13.43 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 15.00 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 %): 9.42 ft / 2.87 m
- Mid (50 %): 9.42 ft / 2.87 m
- Quarterdeck (25 %): 9.42 ft / 2.87 m
- Stern: 9.42 ft / 2.87 m
- Average freeboard: 9.84 ft / 3.00 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 49.1 %
- Above water (accommodation/working, high = better): 111.6 %
Waterplane Area: 3,421 Square feet or 318 Square meters
Displacement factor (Displacement / loading): 254 %
Structure weight / hull surface area: 61 lbs/sq ft or 298 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.48
- Longitudinal: 5.09
- Overall: 1.67
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

Breakdown of miscellaneous weight:

Radar and electronics suite: 15 tons
Degaussing equipment: 10 tons
Paravanes and other minesweeping equipment/gear: 75 tons

August von Thomsen, German Naval Store Carrier laid down 1943

Displacement: 1,667 t light; 1,755 t standard; 3,999 t normal; 5,795 t full load

Dimensions: Length overall / water x beam x draught

297.12 ft / 279.69 ft x 44.39 ft x 15.88 ft (normal load) [90.56 m / 85.25 m x 13.53 m x 4.84 m]

Armament:

1 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1943 Model Anti-aircraft Gun in deck mount on centerline aft
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1943 Model Anti-aircraft guns in deck mounts on centerline ends, evenly spread, all raised mounts - superfiring
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1943 Model Anti-aircraft guns in deck mounts on side, all amidships, 1 raised mount - superfiring
Weight of broadside 42 lbs / 19 kg
Shells per gun, main battery: 300

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 826 shp / 616 Kw = 10.00 kts
Range 89,500nm at 10.00 kts
Bunker at max displacement = 4,040 tons

Complement: 250 - 326

Cost: £0.431 million / $1.722 million

Distribution of weights at normal displacement:

Armament: 5 tons, 0.1 %
Machinery: 21 tons, 0.5 %
Hull, fittings & equipment: 1,090 tons, 27.3 %
Fuel, ammunition & stores: 2,332 tons, 58.3 %
Miscellaneous weights: 550 tons, 13.8 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 28,058 lbs / 12,727 Kg = 794.4 x 4.1 " / 105 mm shells or 7.8 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 2.3 ft / 0.7 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 88 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle, rise forward of midbreak, raised quarterdeck
Block coefficient: 0.710
Length to Beam Ratio: 6.30: 1
'Natural speed' for length: 16.72 kts
Power going to wave formation at top speed: 27 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.29 ft / 7.10 m
- Forecastle (20 %): 22.15 ft / 6.75 m (21.33 ft / 6.50 m aft of break)
- Mid (50 %): 20.51 ft / 6.25 m (19.69 ft / 6.00 m aft of break)
- Quarterdeck (15 %): 20.51 ft / 6.25 m (19.69 ft / 6.00 m before break)
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 20.82 ft / 6.35 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 19.6 %
- Above water (accommodation/working, high = better): 154.1 %
Waterplane Area: 9,987 Square feet or 928 Square meters
Displacement factor (Displacement / loading): 630 %
Structure weight / hull surface area: 57 lbs/sq. ft or 279 Kg/sq. meter
Hull strength (Relative):
- Cross-sectional: 0.85
- Longitudinal: 6.05
- 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

Adapted from standard Hansa A-3 cargo vessels - Cost to convert 250 tons; time to convert 49 days

Low-stowed cargo simmed as additional fuel - true bunkers 269 tons for a radius of 10,000 nm; low stowed cargo 1,900 tons

550 tons miscellaneous weight reserved for deck cargo, modifications, etc.

Glücksburg, German Ice Patrol Ship laid down 1950

Displacement: 2,800 t light; 2,894 t standard; 3,500 t normal; 3,985 t full load

Dimensions: Length overall / water x beam x draught

277.86 ft / 271.16 ft x 46.59 ft x 21.10 ft (normal load) [84.69 m / 82.65 m x 14.20 m x 6.43 m]

Armament:

2 - 4.13" / 105 mm guns (1x2 guns), 35.32lbs / 16.02kg shells, 1950 Model Anti-aircraft guns in a deck mount with hoist on centerline forward
2 - 2.17" / 55.0 mm guns (1x2 guns), 5.08lbs / 2.30kg shells, 1950 Model Anti-aircraft guns in a deck mount with hoist on centerline aft, all raised guns - superfiring
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1950 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 82 lbs / 37 kg
Shells per gun, main battery: 500

Armor:

Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.59" / 15 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -

Machinery:

Diesel Internal combustion generators, electric motors, 2 shafts, 6,323 shp / 4,717 Kw = 18.00 kts
Range 12,000nm at 14.00 kts
Bunker at max displacement = 1,090 tons

Complement: 226 - 295

Cost: £0.999 million / $3.995 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.3 %
Armor: 3 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.1 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 151 tons, 4.3 %
Hull, fittings & equipment: 2,416 tons, 69.0 %
Fuel, ammunition & stores: 700 tons, 20.0 %
Miscellaneous weights: 220 tons, 6.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 17,376 lbs / 7,882 Kg = 491.9 x 4.1 " / 105 mm shells or 5.3 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.9 ft / 0.6 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.08
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has rise forward of midbreak
Block coefficient: 0.460
Length to Beam Ratio: 5.82: 1
'Natural speed' for length: 16.47 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.79 ft / 7.25 m
- Forecastle (15 %): 22.15 ft / 6.75 m
- Mid (40 %): 27.89 ft / 8.50 m (14.76 ft / 4.50 m aft of break)
- Quarterdeck (45 %): 14.76 ft / 4.50 m
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 18.53 ft / 5.65 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 25.3 %
- Above water (accommodation/working, high = better): 144.9 %
Waterplane Area: 8,123 Square feet or 755 Square meters
Displacement factor (Displacement / loading): 577 %
Structure weight / hull surface area: 152 lbs/sq ft or 741 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.94
- Longitudinal: 14.87
- Overall: 2.38
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 buoy-handling derrick and equipment - 120 tons
Provision for deck cargo (buoys etc.) - 100 tons
Hull strengthened for ice navigation

Von der Tann, German Fleet Escort Cruiser laid down 1950

Displacement: 4,790 t light; 4,928 t standard; 5,644 t normal; 6,217 t full load

Dimensions: Length overall / water x beam x draught

538.51 ft / 524.93 ft x 52.49 ft x 15.75 ft (normal load) [164.14 m / 160.00 m x 16.00 m x 4.80 m]

Armament:

4 - 5.04" / 128 mm guns (2x2 guns), 63.99lbs / 29.02kg shells, 1950 Model Dual purpose guns in deck mounts with hoists on centerline ends, evenly spread
4 - 2.17" / 55.0 mm guns (2x2 guns), 5.08lbs / 2.30kg shells, 1950 Model Anti-aircraft guns in deck mounts with hoists on centerline ends, evenly spread, all raised mounts
8 - 1.18" / 30.0 mm guns (4x2 guns), 0.82lbs / 0.37kg shells, 1950 Model Anti-aircraft guns in deck mounts with hoists on side, evenly spread
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1950 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 283 lbs / 129 kg
Shells per gun, main battery: 150
6 - 17.7" / 450 mm above water torpedoes

Armor:

Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.79" / 20 mm 1.57" / 40 mm
2nd: 0.59" / 15 mm 0.59" / 15 mm -

Conning tower: 0.98" / 25 mm

Machinery:

Oil fired boilers, steam turbines, geared drive, 2 shafts, 66,878 shp / 49,891 Kw = 34.00 kts
Range 7,500nm at 17.00 kts
Bunker at max displacement = 1,289 tons

Complement: 325 - 423

Cost: £3.295 million / $13.178 million

Distribution of weights at normal displacement:

Armament: 35 tons, 0.6 %
Armor: 22 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 0.3 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 7 tons, 0.1 %
Machinery: 1,600 tons, 28.3 %
Hull, fittings & equipment: 2,793 tons, 49.5 %
Fuel, ammunition & stores: 854 tons, 15.1 %
Miscellaneous weights: 340 tons, 6.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 8,028 lbs / 3,641 Kg = 125.5 x 5.0 " / 128 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 2.5 ft / 0.8 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 65 %
- Recoil effect (Restricted arc if above 1.00): 0.14
Seaboat quality (Average = 1.00): 1.17

Hull form characteristics:

Hull has rise forward of midbreak and transom stern
Block coefficient: 0.455
Length to Beam Ratio: 10.00: 1
'Natural speed' for length: 26.29 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.59 ft / 7.80 m
- Forecastle (20 %): 24.61 ft / 7.50 m
- Mid (60 %): 23.62 ft / 7.20 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- 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): 103.7 %
- Above water (accommodation/working, high = better): 190.9 %
Waterplane Area: 18,339 Square feet or 1,704 Square meters
Displacement factor (Displacement / loading): 147 %
Structure weight / hull surface area: 91 lbs/sq ft or 445 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.06
- Longitudinal: 2.20
- Overall: 1.14
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Reserved for air warning radar - 30 tons
Reserved for surface search radar - 25 tons
Reserved for fire control radar - 25 tons
Reserved for AS detection equipment - 40 tons
Reserved for forward standoff AS weapon - 20 tons
Reserved for midship standoff AS weapons - 50 tons
Reserved for helicopter and aviation equipment - 150 tons

Torpedo tubes launch wire-guided antisubmarine homing torpedoes