WesWorld

Placeholder for data relating to major surface warships

Bismarck, German Battleship laid down 1933



Displacement: 39,960 t light; 41,995 t standard; 45,734 t normal; 48,725 t full load

Dimensions: Length overall / water x beam x draught

825.37 ft / 803.81 ft x 108.27 ft x 31.99 ft (normal load) [251.57 m / 245.00 m x 33.00 m x 9.75 m]

Armament:

9 - 14.96" / 380 mm guns (3x3 guns), 1,984.16lbs / 900.00kg shells, 1933 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
12 - 5.91" / 150 mm guns (4x3 guns), 102.98lbs / 45.5kg shells, 1928 Model Breech loading guns in turrets (on barbettes) on side ends, evenly spread
2 - 4.13" / 105 mm guns (1x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Dual purpose guns in a deck mount with hoist on centreline aft, all raised guns - superfiring
16 - 4.13" / 105 mm guns (8x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Dual purpose guns in deck mounts with hoists on side, evenly spread, 4 raised mounts
32 - 1.46" / 37.0 mm guns (16x2 guns), 1.55lbs / 0.70kg shells, 1929 Model Anti-aircraft guns in deck mounts on side, evenly spread, 8 raised mounts
Weight of broadside 19,779 lbs / 8,971 kg
Shells per gun, main battery: 100

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 16.5" / 420 mm 490.32 ft / 149.45 m 13.94 ft / 4.25 m
Ends: 2.76" / 70 mm 313.45 ft / 95.54 m 15.58 ft / 4.75 m
Upper: 2.76" / 70 mm 490.32 ft / 149.45 m 1.64 ft / 0.50 m
Main Belt covers 94 % of normal length

Torpedo Bulkhead: 1.97" / 50 mm 490.32 ft / 149.45 m 29.79 ft / 9.08 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 19.7" / 500 mm 9.45" / 240 mm 13.8" / 350 mm
2nd: 4.72" / 120 mm 2.76" / 70 mm 4.72" / 120 mm
3rd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
4th: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
5th: 0.79" / 20 mm 0.39" / 10 mm -

Armour deck: 5.12" / 130 mm, Conning tower: 14.96" / 380 mm

Machinery: Oil fired boilers, steam turbines plus diesel motors, Electric motors, 4 shafts, 106,769 shp / 79,649 Kw = 28.00 kts
Range 12,500nm at 15.00 kts
Bunker at max displacement = 6,729 tons

Complement: 1,563 - 2,032

Cost: £17.103 million / $68.413 million

Distribution of weights at normal displacement:

Armament: 2,124 tons, 4.6 %
Armour: 16,677 tons, 36.5 %
- Belts: 5,518 tons, 12.1 %
- Torpedo bulkhead: 1,064 tons, 2.3 %
- Armament: 3,550 tons, 7.8 %
- Armour Deck: 6,132 tons, 13.4 %
- Conning Tower: 412 tons, 0.9 %
Machinery: 3,111 tons, 6.8 %
Hull, fittings & equipment: 17,769 tons, 38.9 %
Fuel, ammunition & stores: 5,774 tons, 12.6 %
Miscellaneous weights: 280 tons, 0.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 73,747 lbs / 33,451 Kg = 44.0 x 15.0 " / 380 mm shells or 12.6 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 6.5 ft / 2.0 m
Roll period: 17.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.66
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.575
Length to Beam Ratio: 7.42: 1
'Natural speed' for length: 32.87 kts
Power going to wave formation at top speed: 48 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.66 ft / 9.65 m
- Forecastle (22 %): 20.51 ft / 6.25 m
- Mid (50 %): 20.51 ft / 6.25 m
- Quarterdeck (17 %): 20.51 ft / 6.25 m
- Stern: 20.51 ft / 6.25 m
- Average freeboard: 21.49 ft / 6.55 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 72.0 %
- Above water (accommodation/working, high = better): 161.8 %
Waterplane Area: 64,767 Square feet or 6,017 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 206 lbs/sq ft or 1,007 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.18
- 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
Good seaboat, rides out heavy weather easily

80 tons reserved for aircraft
200 tons reserved for flag accommodations and growth

Main belt armor is laid out with an external 70mm decapping plate and an internal 350mm belt. Upper belt is an extension of the decapping plate, to ensure that incoming projectiles are decapped before they impact on the main belt.

Bismarck – Laid down 1Q 1933; launched 3Q 1934; completed 3Q 1937
Tirpitz – Laid down 3Q 1933; launched 1Q 1935; completed 3Q 1937
Hindenburg – Laid down 1Q 1934; launched 3Q 1935; completed 1Q 1938
Mackensen – Laid down 1Q 1934; launched 3Q 1935; completed 1Q 1938

Refitted 1945 as follows:

Bismarck, German Battleship laid down 1933

Displacement: 39,958 t light; 41,995 t standard; 45,734 t normal; 48,725 t full load

Dimensions: Length overall / water x beam x draught

825.37 ft / 803.81 ft x 108.27 ft x 31.99 ft (normal load) [251.57 m / 245.00 m x 33.00 m x 9.75 m]

Armament:

9 - 14.96" / 380 mm guns (3x3 guns), 1,984.16lbs / 900.00kg shells, 1933 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
12 - 5.91" / 150 mm guns (4x3 guns), 102.98lbs / 46.71kg shells, 1928 Model Breech loading guns in turrets (on barbettes) on side ends, evenly spread
2 - 4.13" / 105 mm guns (1x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Dual purpose guns in a deck mount with hoist on centreline aft, all raised guns - superfiring
16 - 4.13" / 105 mm guns (8x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Dual purpose guns in deck mounts with hoists on side, evenly spread, 4 raised mounts
16 - 2.17" / 55.0 mm guns in single mounts, 5.08lbs / 2.30kg shells, 1945 Model Anti-aircraft guns in deck mounts on side, evenly spread, 8 raised mounts
Weight of broadside 19,810 lbs / 8,986 kg
Shells per gun, main battery: 100

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 16.5" / 420 mm 490.32 ft / 149.45 m 13.94 ft / 4.25 m
Ends: 2.76" / 70 mm 313.45 ft / 95.54 m 15.58 ft / 4.75 m
Upper: 2.76" / 70 mm 490.32 ft / 149.45 m 1.64 ft / 0.50 m
Main Belt covers 94 % of normal length

Torpedo Bulkhead: 1.97" / 50 mm 490.32 ft / 149.45 m 29.79 ft / 9.08 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 19.7" / 500 mm 9.45" / 240 mm 13.8" / 350 mm
2nd: 4.72" / 120 mm 2.76" / 70 mm 4.72" / 120 mm
3rd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
4th: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
5th: 0.79" / 20 mm 0.39" / 10 mm -

Armour deck: 5.12" / 130 mm, Conning tower: 14.96" / 380 mm

Machinery:

Oil fired boilers, steam turbines plus diesel motors, Electric motors, 4 shafts, 106,769 shp / 79,649 Kw = 28.00 kts
Range 12,500nm at 15.00 kts
Bunker at max displacement = 6,729 tons

Complement: 1,563 - 2,032

Cost: £17.119 million / $68.475 million

Distribution of weights at normal displacement:

Armament: 2,128 tons, 4.7 %
Armour: 16,676 tons, 36.5 %
- Belts: 5,518 tons, 12.1 %
- Torpedo bulkhead: 1,064 tons, 2.3 %
- Armament: 3,549 tons, 7.8 %
- Armour Deck: 6,132 tons, 13.4 %
- Conning Tower: 412 tons, 0.9 %
Machinery: 3,111 tons, 6.8 %
Hull, fittings & equipment: 17,773 tons, 38.9 %
Fuel, ammunition & stores: 5,776 tons, 12.6 %
Miscellaneous weights: 270 tons, 0.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 73,701 lbs / 33,430 Kg = 44.0 x 15.0 " / 380 mm shells or 12.6 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 6.5 ft / 2.0 m
Roll period: 17.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.66
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.575
Length to Beam Ratio: 7.42: 1
'Natural speed' for length: 32.87 kts
Power going to wave formation at top speed: 48 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.66 ft / 9.65 m
- Forecastle (22 %): 20.51 ft / 6.25 m
- Mid (50 %): 20.51 ft / 6.25 m
- Quarterdeck (17 %): 20.51 ft / 6.25 m
- Stern: 20.51 ft / 6.25 m
- Average freeboard: 21.49 ft / 6.55 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 72.1 %
- Above water (accommodation/working, high = better): 161.8 %
Waterplane Area: 64,767 Square feet or 6,017 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 206 lbs/sq ft or 1,007 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.18
- 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
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weight

Aircraft and aviation equipment - 80 tons
Flag Accommodations - 40 tons
Surface search radar - 50 tons
Gunnery radars HA/LA - 100

Minor Refit - 5%

Replace 37mm LAA with new 55mm AA
Add radar

Cost 1,998 tons; time for refit - 74 days

Bismarck – refit commenced 1 January 1945, completed 16 March 1945
Tirpitz – refit commenced 1 January 1945, completed 16 March 1945
Hindenburg - refit commenced 1 April 1945, completed 14 June 1945
Mackensen - refit commenced 1 April 1945, completed 14 June 1945

Blucher, German Large Cruiser laid down 1931



Displacement: 20,038 t light; 20,982 t standard; 22,598 t normal; 23,890 t full load

Dimensions: Length overall / water x beam x draught

711.67 ft / 688.98 ft x 82.84 ft x 25.43 ft (normal load) [216.92 m / 210.00 m x 25.25 m x 7.75 m]

Armament:

9 - 11.14" / 283 mm guns (3x3 guns), 727.53lbs / 330.00kg shells, 1931 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
16 - 4.13" / 105 mm guns (8x2 guns), 35.32lbs / 16.02kg shells, 1931 Model Breech loading guns in deck mounts with hoists on side, evenly spread
2 - 4.13" / 105 mm guns (1x2 guns), 35.32lbs / 16.02kg shells, 1931 Model Dual purpose guns in a deck mount with hoist on centreline aft, all raised guns - superfiring
16 - 1.46" / 37.0 mm guns (8x2 guns), 1.55lbs / 0.70kg shells, 1931 Model Dual purpose guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 7,208 lbs / 3,270 kg
Shells per gun, main battery: 120

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 8.27" / 210 mm 444.39 ft / 135.45 m 10.93 ft / 3.33 m
Ends: Unarmoured
Main Belt covers 99 % of normal length

Torpedo Bulkhead: 1.18" / 30 mm 444.39 ft / 135.45 m 23.26 ft / 7.09 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.45" / 240 mm 5.51" / 140 mm 8.27" / 210 mm
2nd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
4th: 0.79" / 20 mm 0.39" / 10 mm -

Armour deck: 3.54" / 90 mm, Conning tower: 6.69" / 170 mm

Machinery:

Oil fired boilers, steam turbines plus diesel motors, Electric motors, 4 shafts, 104,837 shp / 78,208 Kw = 31.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 2,908 tons

Complement: 921 - 1,198

Cost: £8.130 million / $32.520 million

Distribution of weights at normal displacement:
Armament: 861 tons, 3.8 %
Armour: 6,430 tons, 28.5 %
- Belts: 1,705 tons, 7.5 %
- Torpedo bulkhead: 452 tons, 2.0 %
- Armament: 1,452 tons, 6.4 %
- Armour Deck: 2,705 tons, 12.0 %
- Conning Tower: 115 tons, 0.5 %
Machinery: 3,135 tons, 13.9 %
Hull, fittings & equipment: 9,493 tons, 42.0 %
Fuel, ammunition & stores: 2,559 tons, 11.3 %
Miscellaneous weights: 120 tons, 0.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 35,373 lbs / 16,045 Kg = 51.2 x 11.1 " / 283 mm shells or 4.9 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 4.5 ft / 1.4 m
Roll period: 16.3 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.72
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.545
Length to Beam Ratio: 8.32 : 1
'Natural speed' for length: 30.24 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 33.63 ft / 10.25 m
- Forecastle (21 %): 24.61 ft / 7.50 m
- Mid (50 %): 23.79 ft / 7.25 m
- Quarterdeck (15 %): 23.79 ft / 7.25 m
- Stern: 23.79 ft / 7.25 m
- Average freeboard: 24.82 ft / 7.56 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 99.2 %
- Above water (accommodation/working, high = better): 204.6 %
Waterplane Area: 41,271 Square feet or 3,834 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 156 lbs/sq ft or 761 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.53
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

120 tons reserved for aircraft and future growth

Refit Scheme Adopted 1943

Blucher, German Large Cruiser laid down 1931

Displacement: 20,038 t light; 20,982 t standard; 22,598 t normal; 23,890 t full load

Dimensions: Length overall / water x beam x draught

711.67 ft / 688.98 ft x 82.84 ft x 25.43 ft (normal load) [216.92 m / 210.00 m x 25.25 m x 7.75 m]

Armament:

9 - 11.14" / 283 mm guns (3x3 guns), 727.53lbs / 330.00kg shells, 1931 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
16 - 4.13" / 105 mm guns (8x2 guns), 35.32lbs / 16.02kg shells, 1931 Model Breech loading guns in deck mounts with hoists on side, evenly spread
2 - 4.13" / 105 mm guns (1x2 guns), 35.32lbs / 16.02kg shells, 1931 Model Dual purpose guns in a deck mount with hoist on centreline aft, all raised guns - superfiring
16 - 1.46" / 37.0 mm guns (8x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
16 - 0.79" / 20.0 mm guns (4x4 guns), 0.24lbs / 0.11kg shells, 1938 Model Breech loading guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 7,212 lbs / 3,271 kg
Shells per gun, main battery: 120

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 8.27" / 210 mm 444.39 ft / 135.45 m 10.93 ft / 3.33 m
Ends: Unarmoured
Main Belt covers 99 % of normal length

Torpedo Bulkhead: 1.18" / 30 mm 444.39 ft / 135.45 m 23.26 ft / 7.09 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 9.45" / 240 mm 5.51" / 140 mm 8.27" / 210 mm
2nd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
4th: 0.79" / 20 mm 0.39" / 10 mm -

Armour deck: 3.54" / 90 mm, Conning tower: 6.69" / 170 mm

Machinery:

Oil fired boilers, steam turbines plus diesel motors, Electric motors, 4 shafts, 104,837 shp / 78,208 Kw = 31.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 2,908 tons

Complement: 921 - 1,198

Cost: £8.132 million / $32.527 million

Distribution of weights at normal displacement:

Armament: 861 tons, 3.8 %
Armour: 6,430 tons, 28.5 %
- Belts: 1,705 tons, 7.5 %
- Torpedo bulkhead: 452 tons, 2.0 %
- Armament: 1,452 tons, 6.4 %
- Armour Deck: 2,705 tons, 12.0 %
- Conning Tower: 115 tons, 0.5 %
Machinery: 3,135 tons, 13.9 %
Hull, fittings & equipment: 9,492 tons, 42.0 %
Fuel, ammunition & stores: 2,560 tons, 11.3 %
Miscellaneous weights: 120 tons, 0.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 35,350 lbs / 16,035 Kg = 51.1 x 11.1 " / 283 mm shells or 4.9 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 4.5 ft / 1.4 m
Roll period: 16.3 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.72
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.545
Length to Beam Ratio: 8.32: 1
'Natural speed' for length: 30.24 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 33.63 ft / 10.25 m
- Forecastle (21 %): 24.61 ft / 7.50 m
- Mid (50 %): 23.79 ft / 7.25 m
- Quarterdeck (15 %): 23.79 ft / 7.25 m
- Stern: 23.79 ft / 7.25 m
- Average freeboard: 24.84 ft / 7.57 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 99.2 %
- Above water (accommodation/working, high = better): 204.6 %
Waterplane Area: 41,271 Square feet or 3,834 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 156 lbs/sq ft or 761 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.53
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Breakdown of miscellaneous weight

Two aircraft and aircraft handling facilities - 80 tons
Search and fire control radars - 40 tons

Level 1 Manual Refit comprising

Replacement of 37mm LAA battery with more modern Model 38 guns
Addition of 20mm LAA battery
Installation of radar


Projected cost to refit 1,002 tons
Projected time to refit 44 days


Blucher: Refit commenced 1 Jul 1943; complete 14 Aug 1943
Von der Tann: Refit commenced 1 Jul 1943; complete 14 Aug 1943

Derfflinger, German Large Cruiser laid down 1935



Displacement: 20,095 t light; 21,040 t standard; 22,598 t normal; 23,844 t full load

Dimensions: Length overall / water x beam x draught

711.67 ft / 688.98 ft x 82.84 ft x 25.43 ft (normal load) [216.92 m / 210.00 m x 25.25 m x 7.75 m]

Armament:

9 - 11.14" / 283 mm guns (3x3 guns), 727.53lbs / 330.00kg shells, 1931 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
16 - 4.13" / 105 mm guns (8x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Breech loading guns in deck mounts with hoists on side, evenly spread
2 - 4.13" / 105 mm guns (1x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Dual purpose guns in a deck mount with hoist on centreline aft, all raised guns - superfiring
16 - 1.46" / 37.0 mm guns (8x2 guns), 1.55lbs / 0.70kg shells, 1929 Model Dual purpose guns in deck mounts on side, evenly spread, all raised mounts
32 - 0.79" / 20.0 mm guns (8x4 guns), 0.24lbs / 0.11kg shells, 1935 Model Anti-aircraft guns in deck mounts on side, evenly spread, 2 raised mounts
Weight of broadside 7,216 lbs / 3,273 kg
Shells per gun, main battery: 120

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 9.06" / 230 mm 444.39 ft / 135.45 m 10.93 ft / 3.33 m
Ends: Unarmoured
Main Belt covers 99 % of normal length

Torpedo Bulkhead: 1.18" / 30 mm 444.39 ft / 135.45 m 23.26 ft / 7.09 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.45" / 240 mm 5.51" / 140 mm 8.27" / 210 mm
2nd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
4th: 0.79" / 20 mm 0.39" / 10 mm -
5th: 0.39" / 10 mm 0.39" / 10 mm -

Armour deck: 3.54" / 90 mm, Conning tower: 6.69" / 170 mm

Machinery:

Oil fired boilers, steam turbines plus diesel motors, Electric motors, 4 shafts, 104,837 shp / 78,208 Kw = 31.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 2,805 tons

Complement: 921 - 1,198

Cost: £9.387 million / $37.550 million

Distribution of weights at normal displacement:

Armament: 862 tons, 3.8 %
Armour: 6,596 tons, 29.2 %
- Belts: 1,868 tons, 8.3 %
- Torpedo bulkhead: 452 tons, 2.0 %
- Armament: 1,456 tons, 6.4 %
- Armour Deck: 2,705 tons, 12.0 %
- Conning Tower: 115 tons, 0.5 %
Machinery: 2,978 tons, 13.2 %
Hull, fittings & equipment: 9,489 tons, 42.0 %
Fuel, ammunition & stores: 2,503 tons, 11.1 %
Miscellaneous weights: 170 tons, 0.8 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):
36,222 lbs / 16,430 Kg = 52.4 x 11.1 " / 283 mm shells or 5.1 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 4.5 ft / 1.4 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.72
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.545
Length to Beam Ratio: 8.32: 1
'Natural speed' for length: 30.24 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 33.63 ft / 10.25 m
- Forecastle (21 %): 24.61 ft / 7.50 m
- Mid (50 %): 23.79 ft / 7.25 m
- Quarterdeck (15 %): 23.79 ft / 7.25 m
- Stern: 23.79 ft / 7.25 m
- Average freeboard: 24.82 ft / 7.56 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 96.6 %
- Above water (accommodation/working, high = better): 204.6 %
Waterplane Area: 41,271 Square feet or 3,834 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 156 lbs/sq ft or 761 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.54
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

80 tons reserved for aircraft
40 tons reserved for radar
50 tons reserved for growth


Derfflinger – Laid down Jan 1935; Launched Dec 1935; Completed Jun 1937
Seydlitz – Laid down Jan 1935; Launched Dec 1935; Completed Jun 1937

Sachsen, German Battleship laid down 1935

Displacement: 63,165 t light; 66,435 t standard; 71,735 t normal; 75,974 t full load

Dimensions: Length overall / water x beam x draught

908.05 ft / 885.83 ft x 126.31 ft x 39.44 ft (normal load) [276.77 m / 270.00 m x 38.50 m x 12.02 m]

Armament:

9 - 17.72" / 450 mm guns (3x3 guns), 3,306.93lbs / 1,500.00kg shells, 1935 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
18 - 5.91" / 150 mm guns (6x3 guns), 102.98lbs / 46.71kg shells, 1925 Model Breech loading guns in turrets (on barbettes) on side, evenly spread
22 - 4.13" / 105 mm guns (11x2 guns), 35.32lbs / 16.02kg shells, 1928 Model Dual purpose guns in deck mounts with hoists on side, evenly spread, all raised mounts
40 - 1.46" / 37.0 mm guns (20x2 guns), 1.55lbs / 0.70kg shells, 1929 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
64 - 0.79" / 20.0 mm guns (26 mounts), 0.24lbs / 0.11kg shells, 1928 Model Machine guns in deck mounts on side, evenly spread, 16 raised mounts
Weight of broadside 32,470 lbs / 14,728 kg
Shells per gun, main battery: 100

Armour:
Belts: Width (max) Length (avg) Height (avg)
Main: 20.5" / 520 mm 540.35 ft / 164.70 m 17.22 ft / 5.25 m
Ends: 3.94" / 100 mm 345.44 ft / 105.29 m 19.69 ft / 6.00 m
Upper: 3.94" / 100 mm 540.35 ft / 164.70 m 2.46 ft / 0.75 m
Main Belt covers 94 % of normal length

Torpedo Bulkhead: 2.36" / 60 mm 540.35 ft / 164.70 m 35.50 ft / 10.82 m

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 23.6" / 600 mm 12.0" / 305 mm 17.7" / 450 mm
2nd: 4.72" / 120 mm 2.76" / 70 mm 4.72" / 120 mm
3rd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
4th: 0.79" / 20 mm 0.39" / 10 mm -
5th: 0.39" / 10 mm 0.39" / 10 mm -

Armour deck: 7.09" / 180 mm, Conning tower: 13.78" / 350 mm

Machinery:

Oil fired boilers, steam turbines plus diesel motors,
Electric motors, 4 shafts, 136,476 shp / 101,811 Kw = 28.00 kts
Range 13,800nm at 15.00 kts
Bunker at max displacement = 9,539 tons

Complement: 2,191 - 2,849

Cost: £28.842 million / $115.368 million

Distribution of weights at normal displacement:

Armament: 3,466 tons, 4.8 %
Armour: 28,329 tons, 39.5 %
- Belts: 9,572 tons, 13.3 %
- Torpedo bulkhead: 1,677 tons, 2.3 %
- Armament: 5,714 tons, 8.0 %
- Armour Deck: 10,854 tons, 15.1 %
- Conning Tower: 513 tons, 0.7 %
Machinery: 3,877 tons, 5.4 %
Hull, fittings & equipment: 26,792 tons, 37.3 %
Fuel, ammunition & stores: 8,570 tons, 11.9 %
Miscellaneous weights: 700 tons, 1.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 116,635 lbs / 52,905 Kg = 41.9 x 17.7 " / 450 mm shells or 21.1 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 8.7 ft / 2.7 m
Roll period: 17.9 seconds
Steadiness - As gun platform (Average = 50 %): 63 %
- Recoil effect (Restricted arc if above 1.00): 0.57
Seaboat quality (Average = 1.00): 1.26

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.569
Length to Beam Ratio: 7.01: 1
'Natural speed' for length: 34.70 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 32.81 ft / 10.00 m
- Forecastle (22 %): 21.98 ft / 6.70 m
- Mid (50 %): 21.98 ft / 6.70 m
- Quarterdeck (17 %): 21.98 ft / 6.70 m
- Stern: 21.98 ft / 6.70 m
- Average freeboard: 22.93 ft / 6.99 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 66.6 %
- Above water (accommodation/working, high = better): 158.2 %
Waterplane Area: 82,793 Square feet or 7,692 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 243 lbs/sq ft or 1,189 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.27
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily


Details of armament layout (taken from Hrolf's original SS3 sim)

9 - 17.72" / 450 mm Breech loading guns in turret on barbette mounts, 1935 Model, 3 x 3-gun mounts on centreline ends, majority forward, 1 raised mount - superfiring
18 - 5.91" / 150 mm Breech loading guns in turret on barbette mounts, 1925 Model, 6x3 gun mounts on sides, evenly spread
22 - 4.13" / 105 mm Dual purpose guns in deck and hoist mounts, 1928 Model, 10x2 mounts on sides, evenly spread, 10 raised mounts, plus 1x2 mount on centreline, aft deck centre, 1 raised mount
40 - 1.46" / 37.0 mm Anti-air guns in deck mounts, 1929 Model, 18x2 mounts on sides, evenly spread, 8 raised mounts, plus 2x2 mounts on centreline ends, evenly spread, 2 double raised mounts
64 - 0.79" / 20.0 mm Machine guns in deck mounts, 1928 Model, 12 x 2 row quad mounts on sides, evenly spread, 4 raised mounts,4 x 2 row quad mounts on side ends, evenly spread, 4 double raised mounts

Armour belt is a 100mm decapping plate, backed up by a 420mm main belt. Upper belt and end belts are extensions of the decapping plate.

Breakdown of miscellaneous weight

80 tons reserved for aircraft
60 tons reserved for flag accommodations
100 tons reserved for radar and fire control
460 tons reserved for growth


Sachsen – Laid down 1 Jan 1935; Launched 30 Jun 1937; Completed 30 November 1942
Ostmark – Laid down 1 Jul 1935; Launched 15 Dec 1937; Completed 30 November 1942
Preußen – Laid down 1 Jan 1936; Launched 30 Jun 1938; Completed 30 November 1942
Bayern – Laid down 1 Apr 1936; Launched 30 Jun 1938; Completed 30 November 1942