Battleships

Logi · November 13, 2008, 04:54:11 PM

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Poltava, Battleship laid down 1896 Thunder Class

Displacement:
11,379 t light; 12,059 t standard; 12,827 t normal; 13,442 t full load

Dimensions: Length overall / water x beam x draught
375.00 ft / 375.00 ft x 69.88 ft x 25.92 ft (normal load)
114.30 m / 114.30 m x 21.30 m x 7.90 m

Armament:
4 - 12.01" / 305 mm guns (2x2 guns), 865.70lbs / 392.67kg shells, 1896 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 5.98" / 152 mm guns (4x2 guns), 107.15lbs / 48.60kg shells, 1896 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships
4 - 5.98" / 152 mm guns in single mounts, 107.15lbs / 48.60kg shells, 1896 Model
Breech loading guns in deck mounts
on side, evenly spread
10 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1896 Model
Quick firing guns in deck mounts
on side, evenly spread
28 - 1.46" / 37.0 mm guns (2x14 guns), 1.55lbs / 0.70kg shells, 1896 Model
Quick firing guns in deck mounts
on side, evenly spread
Weight of broadside 4,824 lbs / 2,188 kg
Shells per gun, main battery: 150
6 - 17.7" / 450 mm submerged torpedo tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 15.2" / 386 mm 328.08 ft / 100.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Main Belt covers 135 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.84" / 250 mm 3.94" / 100 mm 3.94" / 100 mm
2nd: 5.00" / 127 mm 1.97" / 50 mm 1.97" / 50 mm

- Armour deck: 3.54" / 90 mm, Conning tower: 11.02" / 280 mm

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 10,600 ihp / 7,907 Kw = 16.90 kts
Range 4,400nm at 10.00 kts
Bunker at max displacement = 1,383 tons (100% coal)

Complement:
602 - 783

Cost:
£1.152 million / $4.608 million

Distribution of weights at normal displacement:
Armament: 603 tons, 4.7 %
Armour: 4,765 tons, 37.1 %
- Belts: 2,708 tons, 21.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 598 tons, 4.7 %
- Armour Deck: 1,329 tons, 10.4 %
- Conning Tower: 130 tons, 1.0 %
Machinery: 1,767 tons, 13.8 %
Hull, fittings & equipment: 4,044 tons, 31.5 %
Fuel, ammunition & stores: 1,449 tons, 11.3 %
Miscellaneous weights: 200 tons, 1.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
13,959 lbs / 6,332 Kg = 16.1 x 12.0 " / 305 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 3.5 ft / 1.1 m
Roll period: 15.8 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 1.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.661
Length to Beam Ratio: 5.37 : 1
'Natural speed' for length: 19.36 kts
Power going to wave formation at top speed: 48 %
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 (% = measuring location as a percentage of overall length):
- Stem: 19.69 ft / 6.00 m
- Forecastle (20 %): 19.69 ft / 6.00 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: 19.69 ft / 6.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.6 %
- Above water (accommodation/working, high = better): 126.3 %
Waterplane Area: 20,278 Square feet or 1,884 Square metres
Displacement factor (Displacement / loading): 96 %
Structure weight / hull surface area: 131 lbs/sq ft or 642 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.28
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
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

Ships:
Wei Lei (great Thunder)

Battleships

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