WesWorld

Here's my first crack at simming the four capital ship classes retained by Germany in some form for the Reichsmarine of 1921. Any comments would be appreciated, particularly as a few details (light gun armor, torpedo bulkheads, upper belts) are guesses; otherwise, I've tried to get them as close to historical as possible.

Markgraf, Konig class, laid down 1911

Length, 568 ft x Beam, 97.5 ft x Depth, 26.5 ft
25997 tons normal displacement (23506 tons standard)

Main battery: 10 x 12.0-inch (5 x 2; 2 superfiring)
Secondary battery: 14 x 5.9-inch
QF battery: 12 x 3.5-inch
Light battery: 4 x 1.5-inch

Weight of broadside: 10342 lbs

5 TT, 19.7" (submerged)

Main belt, 13.8 inches; bow and stern, 6.5 inches
Upper belt, 6.7 inches
Torpedo bulkhead, 3.0 inches
Armor deck, average 2.3 inches
C.T., 11.8 inches

Battery armor:
Main, 11.8" / secondary, 6.7"
QF, 6.0" / light guns, 1.0" shields

Maximum speed for 31889 shp = 20.80 knots
Approximate cruising radius, 8000 nm / 12 kts

Typical complement: 1024-1331


Estimated cost, $8.238 million (£2.060 million)

Remarks:

Superfiring turret is aft.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are roomy, with superior
watertight subdivision.

Ship is roomy, with superior accommodation and working space.

Main deck secondary guns subject to being washed down
in a seaway.

Main deck QF guns subject to being washed down in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 1293 tons = 5 pct
Armor, total ..................... 10259 tons = 39 pct

Belt 4081 tons = 16 pct
Torpedo bulkhead 1068 tons = 4 pct
Deck 1711 tons = 7 pct
C.T. 224 tons = 1 pct
Armament 3176 tons = 12 pct

Machinery ........................ 1424 tons = 5 pct
Hull and fittings; equipment ..... 9099 tons = 35 pct
Fuel, ammunition, stores ......... 3872 tons = 15 pct
Miscellaneous weights ............ 50 tons = 0 pct
-----
25997 tons = 100 pct

Estimated metacentric height, 5.7 ft

Displacement summary:

Light ship: 22125 tons
Standard displacement: 23506 tons
Normal service: 25997 tons
Full load: 27885 tons

Loading submergence 1149 tons/foot

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.10

Shellfire needed to sink: 32527 lbs = 37.6 x 12.0-inch shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 5.8
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 72 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.45

Relative quality as a seaboat: 1.30

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.62
Sharpness coefficient: 0.44
Hull speed coefficient 'M' = 5.87
'Natural speed' for length = 23.8 knots
Power going to wave formation
at top speed: 45 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 75 percent

Relative accommodation and working space: 132 percent


Displacement factor: 111 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.98
(Structure weight per square
foot of hull surface: 170 lbs)

Relative longitudinal hull strength: 1.33
(for 17.7 ft average freeboard;
freeboard adjustment -0.6 ft)

Relative composite hull strength: 1.01

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

568.00 x 97.50 x 26.50; 17.70 -- Dimensions
0.62 -- Block coefficient
1911 -- Year laid down
20.80 / 8000 / 12.00; Turbine, coal fired -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
10 x 12.00; 5; 2 -- Main battery; turrets; superfiring
Superfiring turret aft only
:
14 x 5.90; 0 -- Secondary battery; turrets
Main deck battery
:
12 x 3.50 -- Tertiary (QF/AA) battery
Main deck battery
:
4 x 1.50 -- Fourth (light) battery
5 / 5 / 19.70 -- TT / submerged / size
++++++++++
13.80 / 6.50 / 6.70 / 2.95; 100 -- Belt armor; relative extent
2.30 / 11.80 -- Deck / CT
11.80 / 6.70 / 6.00 / 1.00 -- Battery armor


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Prinzregent Luitpold, Kaiser class, laid down 1909

Length, 566 ft x Beam, 95.1 ft x Depth, 29.9 ft
27130 tons normal displacement (24377 tons standard)

Main battery: 10 x 12.0-inch (5 x 2; 1 superfiring)
Secondary battery: 14 x 5.9-inch
QF battery: 12 x 3.5-inch
Light battery: 4 x 2.0-inch

Weight of broadside: 10351 lbs

5 TT, 19.7" (submerged)

Main belt, 13.8 inches; bow and stern, 6.0 inches
Upper belt, 6.7 inches
Torpedo bulkhead, 3.0 inches
Armor deck, average 2.3 inches
C.T., 16.0 inches

Battery armor:
Main, 12.0" / secondary, 6.7"
QF, 6.0" / light guns, 1.0" shields

Maximum speed for 33257 shp = 21.00 knots
Approximate cruising radius, 7900 nm / 12 kts

Typical complement: 1057-1374


Estimated cost, $8.495 million (£2.124 million)

Remarks:

Superfiring turret is aft.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are roomy, with superior
watertight subdivision.

Ship is roomy, with superior accommodation and working space.

Main deck secondary guns subject to being washed down
in a seaway.

Main deck QF guns subject to being washed down in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 1294 tons = 5 pct
Armor, total ..................... 10252 tons = 38 pct

Belt 3972 tons = 15 pct
Torpedo bulkhead 1201 tons = 4 pct
Deck 1608 tons = 6 pct
C.T. 312 tons = 1 pct
Armament 3158 tons = 12 pct

Machinery ........................ 1663 tons = 6 pct
Hull and fittings; equipment ..... 9714 tons = 36 pct
Fuel, ammunition, stores ......... 4158 tons = 15 pct
Miscellaneous weights ............ 50 tons = 0 pct
-----
27130 tons = 100 pct

Estimated metacentric height, 5.5 ft

Displacement summary:

Light ship: 22972 tons
Standard displacement: 24377 tons
Normal service: 27130 tons
Full load: 29224 tons

Loading submergence 1080 tons/foot

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.09

Shellfire needed to sink: 32417 lbs = 37.5 x 12.0-inch shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 5.5
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 74 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.51

Relative quality as a seaboat: 1.42

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.59
Sharpness coefficient: 0.43
Hull speed coefficient 'M' = 5.76
'Natural speed' for length = 23.8 knots
Power going to wave formation
at top speed: 45 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 76 percent

Relative accommodation and working space: 126 percent


Displacement factor: 114 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 1.05
(Structure weight per square
foot of hull surface: 182 lbs)

Relative longitudinal hull strength: 1.70
(for 18.5 ft average freeboard)

Relative composite hull strength: 1.10

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

566.00 x 95.10 x 29.90; 18.50 -- Dimensions
0.59 -- Block coefficient
1909 -- Year laid down
21.00 / 7900 / 12.00; Turbine, coal fired -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
10 x 12.00; 5; 1 -- Main battery; turrets; superfiring
Superfiring turret aft only
:
14 x 5.90; 0 -- Secondary battery; turrets
Main deck battery
:
12 x 3.50 -- Tertiary (QF/AA) battery
Main deck battery
:
4 x 2.00 -- Fourth (light) battery
5 / 5 / 19.70 -- TT / submerged / size
++++++++++
13.80 / 6.00 / 6.70 / 2.95; 100 -- Belt armor; relative extent
2.30 / 16.00 -- Deck / CT
12.00 / 6.70 / 6.00 / 1.00 -- Battery armor


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Helgoland, Helgoland class, laid down 1908

Length, 548 ft x Beam, 93.5 ft x Depth, 29.2 ft
23938 tons normal displacement (22775 tons standard)

Main battery: 12 x 12.0-inch (6 x 2)
Secondary battery: 14 x 5.9-inch
QF battery: 4 x 3.5-inch
Light battery: 2 x 0.3-inch

Weight of broadside: 11891 lbs

6 TT, 19.7" (submerged)

Main belt, 11.8 inches; bow and stern, 6.0 inches
Upper belt, 6.7 inches
Armor deck, average 2.2 inches
C.T., 12.0 inches

Battery armor:
Main, 12.0" / secondary, 6.7"
QF, 6.0" / light guns, 1.0" shields

Maximum speed for 28116 ihp = 20.50 knots
Approximate cruising radius, 5500 nm / 10 kts

Typical complement: 962-1251


Estimated cost, $9.409 million (£2.352 million)

Remarks:

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.

Ship is roomy, with superior accommodation and working space.

Main deck secondary guns subject to being washed down
in a seaway.

Main deck QF guns subject to being washed down in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 1486 tons = 6 pct
Armor, total ..................... 8454 tons = 35 pct

Belt 3466 tons = 14 pct
Deck 1388 tons = 6 pct
C.T. 215 tons = 1 pct
Armament 3384 tons = 14 pct

Machinery ........................ 2556 tons = 11 pct
Hull and fittings; equipment ..... 8759 tons = 37 pct
Fuel, ammunition, stores ......... 2633 tons = 11 pct
Miscellaneous weights ............ 50 tons = 0 pct
-----
23938 tons = 100 pct

Estimated metacentric height, 5.2 ft

Displacement summary:

Light ship: 21306 tons
Standard displacement: 22775 tons
Normal service: 23938 tons
Full load: 24773 tons

Loading submergence 993 tons/foot

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.07

Shellfire needed to sink: 24850 lbs = 28.8 x 12.0-inch shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 2.7
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.62

Relative quality as a seaboat: 1.43

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.56
Sharpness coefficient: 0.42
Hull speed coefficient 'M' = 5.82
'Natural speed' for length = 23.4 knots
Power going to wave formation
at top speed: 44 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 87 percent

Relative accommodation and working space: 124 percent


Displacement factor: 95 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.98
(Structure weight per square
foot of hull surface: 178 lbs)

Relative longitudinal hull strength: 1.66
(for 18.0 ft average freeboard)

Relative composite hull strength: 1.04

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

548.00 x 93.50 x 29.20; 18.00 -- Dimensions
0.56 -- Block coefficient
1908 -- Year laid down
20.50 / 5500 / 10.00; Reciprocating -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
12 x 12.00; 6; 0 -- Main battery; turrets; superfiring
:
14 x 5.90; 0 -- Secondary battery; turrets
Main deck battery
:
4 x 3.50 -- Tertiary (QF/AA) battery
Main deck battery
:
2 x 0.30 -- Fourth (light) battery
6 / 6 / 19.70 -- TT / submerged / size
++++++++++
11.80 / 6.00 / 6.70 / 0.00; 100 -- Belt armor; relative extent
2.16 / 12.00 -- Deck / CT
12.00 / 6.70 / 6.00 / 1.00 -- Battery armor


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Hannover, Schlesien, Schleswig-Holstein; Deutschland class, laid down 1903

Length, 413 ft x Beam, 72.8 ft x Depth, 26.9 ft
13865 tons normal displacement (13098 tons standard)

Main battery: 4 x 11.0-inch (2 x 2)
Secondary battery: 14 x 6.7-inch
QF battery: 20 x 3.5-inch
Light battery: 4 x 1.5-inch

Weight of broadside: 5203 lbs

6 TT, 17.7" (submerged)

Main belt, 9.5 inches; bow and stern, 4.0 inches
Upper belt, 8.0 inches
Armor deck, average 3.9 inches
C.T., 11.8 inches

Battery armor:
Main, 11.0" / secondary, 6.7"
QF, 4.0" / light guns, 1.0" shields

Maximum speed for 14930 ihp = 18.50 knots
Approximate cruising radius, 4800 nm / 10 kts

Typical complement: 639-831


Estimated cost, $5.167 million (£1.292 million)

Remarks:

Superfiring turret is aft.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.

Main deck secondary guns subject to being washed down
in a seaway.

Main deck QF guns subject to being washed down in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 650 tons = 5 pct
Armor, total ..................... 5087 tons = 37 pct

Belt 2125 tons = 15 pct
Deck 1541 tons = 11 pct
C.T. 147 tons = 1 pct
Armament 1275 tons = 9 pct

Machinery ........................ 2228 tons = 16 pct
Hull and fittings; equipment ..... 4371 tons = 32 pct
Fuel, ammunition, stores ......... 1478 tons = 11 pct
Miscellaneous weights ............ 50 tons = 0 pct
-----
13865 tons = 100 pct

Estimated metacentric height, 3.8 ft

Displacement summary:

Light ship: 12387 tons
Standard displacement: 13098 tons
Normal service: 13865 tons
Full load: 14423 tons

Loading submergence 610 tons/foot

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.11

Shellfire needed to sink: 13040 lbs = 19.6 x 11.0-inch shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 1.7
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 73 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.61

Relative quality as a seaboat: 1.47

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.60
Sharpness coefficient: 0.44
Hull speed coefficient 'M' = 5.26
'Natural speed' for length = 20.3 knots
Power going to wave formation
at top speed: 48 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 96 percent

Relative accommodation and working space: 103 percent


Displacement factor: 94 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.98
(Structure weight per square
foot of hull surface: 137 lbs)

Relative longitudinal hull strength: 2.33
(for 16.2 ft average freeboard)

Relative composite hull strength: 1.07

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

413.00 x 72.80 x 26.90; 16.20 -- Dimensions
0.60 -- Block coefficient
1903 -- Year laid down
18.50 / 4800 / 10.00; Reciprocating -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
4 x 11.00; 2; 0 -- Main battery; turrets; superfiring
Superfiring turret aft only
:
14 x 6.70; 0 -- Secondary battery; turrets
Main deck battery
:
20 x 3.50 -- Tertiary (QF/AA) battery
Main deck battery
:
4 x 1.50 -- Fourth (light) battery
6 / 6 / 17.70 -- TT / submerged / size
++++++++++
9.50 / 4.00 / 8.00 / 0.00; 100 -- Belt armor; relative extent
3.90 / 11.80 -- Deck / CT
11.00 / 6.70 / 4.00 / 1.00 -- Battery armor


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

The QF guns should be higher in the ships, especially on the König-class vessels. The 8,8cm guns were mounted in the superstructure. If the seaway ever gets THAT high, you´re in problems anyway, though. No need to bother if the guns are washed down then.