Warlord's Guide to World War 2 and Battleships in particular (New Nations reference text)

LECTURE VI-2: BATTLESHIP TYPES

OOC: this will take a while to complete; I need to make Springsharp designs for everything here.

There are many types of Battleships.

Let's discuss each type of Battleship and their appropriate role:

Coastal Defense Battleships:

The Coastal Defense Battleship is a small battleship around 20,000 to 35,000 tons.

The Coastal Defense Battleship has heavy armor and good armament, not good speed or good range.

This is because they are made for coastal defense; they can refuel at coasts and has good supply lines, as well as ample warning of enemies. This means they don't need good speed.

Pocket Battleship Prototype, lol nation Coastal Defense Battleship laid down 1934
Displacement:
22,933 t light; 24,359 t standard; 25,159 t normal; 25,799 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(629.92 ft / 629.92 ft) x 85.30 ft x (24.28 / 24.79 ft)
(192.00 m / 192.00 m) x 26.00 m x (7.40 / 7.56 m)
Armament:
9 - 12.01" / 305 mm 50.0 cal guns - 1,014.13lbs / 460.00kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1934 Model
3 x 3-gun mounts on centreline, evenly spread
1 raised mount
80 - 1.57" / 40.0 mm 56.0 cal guns - 1.98lbs / 0.90kg shells, 2,500 per gun
Anti-air guns in deck mounts, 1934 Model
40 x 2-gun mounts on centreline, evenly spread
16 - 5.00" / 127 mm 38.0 cal guns - 55.12lbs / 25.00kg shells, 400 per gun
Dual purpose guns in deck and hoist mounts, 1934 Model
16 x Single mounts on centreline, evenly spread
Weight of broadside 10,168 lbs / 4,612 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 15.0" / 380 mm 313.19 ft / 95.46 m 11.09 ft / 3.38 m
Ends: 2.01" / 51 mm 316.70 ft / 96.53 m 11.09 ft / 3.38 m
Upper: 5.91" / 150 mm 313.19 ft / 95.46 m 8.01 ft / 2.44 m
Main Belt covers 76 % of normal length
Main belt does not fully cover magazines and engineering spaces
Main Belt inclined 18.00 degrees (positive = in)
- Torpedo Bulkhead - Additional damage containing bulkheads:
3.94" / 100 mm 313.19 ft / 95.46 m 24.11 ft / 7.35 m
Beam between torpedo bulkheads 61.35 ft / 18.70 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.2" / 360 mm 7.87" / 200 mm 11.8" / 300 mm
2nd: 0.98" / 25 mm - -
3rd: 3.94" / 100 mm 1.50" / 38 mm 1.97" / 50 mm
- Armoured deck - multiple decks:
For and Aft decks: 5.91" / 150 mm
Forecastle: 1.97" / 50 mm Quarter deck: 1.97" / 50 mm
- Conning towers: Forward 5.91" / 150 mm, Aft 3.94" / 100 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 53,878 shp / 40,193 Kw = 25.00 kts
Range 7,500nm at 10.00 kts
Bunker at max displacement = 1,440 tons
Complement:
998 - 1,298
Cost:
£9.645 million / $38.579 million
Distribution of weights at normal displacement:
Armament: 2,286 tons, 9.1 %
- Guns: 2,286 tons, 9.1 %
Armour: 10,518 tons, 41.8 %
- Belts: 3,325 tons, 13.2 %
- Torpedo bulkhead: 1,100 tons, 4.4 %
- Armament: 2,067 tons, 8.2 %
- Armour Deck: 3,844 tons, 15.3 %
- Conning Towers: 182 tons, 0.7 %
Machinery: 1,550 tons, 6.2 %
Hull, fittings & equipment: 8,579 tons, 34.1 %
Fuel, ammunition & stores: 2,226 tons, 8.8 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
48,396 lbs / 21,952 Kg = 55.9 x 12.0 " / 305 mm shells or 8.9 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 4.9 ft / 1.5 m
Roll period: 16.3 seconds
Steadiness - As gun platform (Average = 50 %): 66 %
- Recoil effect (Restricted arc if above 1.00): 0.81
Seaboat quality (Average = 1.00): 1.32
Hull form characteristics:
Hull has a flush deck,
a normal bow and large transom stern
Block coefficient (normal/deep): 0.675 / 0.678
Length to Beam Ratio: 7.38 : 1
'Natural speed' for length: 28.82 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 25.14 %, 29.53 ft / 9.00 m, 22.97 ft / 7.00 m
- Forward deck: 30.00 %, 22.97 ft / 7.00 m, 20.05 ft / 6.11 m
- Aft deck: 19.72 %, 20.05 ft / 6.11 m, 20.05 ft / 6.11 m
- Quarter deck: 25.14 %, 20.05 ft / 6.11 m, 20.05 ft / 6.11 m
- Average freeboard: 21.88 ft / 6.67 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 78.1 %
- Above water (accommodation/working, high = better): 175.6 %
Waterplane Area: 43,956 Square feet or 4,084 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 163 lbs/sq ft or 796 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.42
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Good seaboat, rides out heavy weather easily

Bump