Yamashiro, japanese coastal battleship laid down 1876 (Engine 1877)
Displacement:
2 081 t light; 2 201 t standard; 2 275 t normal; 2 333 t full load
Dimensions: Length overall / water x beam x draught
220,14 ft / 220,14 ft x 42,65 ft x 14,11 ft (normal load)
67,10 m / 67,10 m x 13,00 m x 4,30 m
Armament:
4 - 8,27" / 210 mm guns in single mounts, 223,23lbs / 101,26kg shells, 1876 Model
Muzzle loading guns in Coles/Ericsson turrets
on centreline ends, evenly spread
Weight of broadside 893 lbs / 405 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9,65" / 245 mm 88,58 ft / 27,00 m 6,89 ft / 2,10 m
Ends: Unarmoured
Main Belt covers 62% of normal length
Main belt does not fully cover magazines and engineering spaces
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7,99" / 203 mm 5,00" / 127 mm -
- Armour deck: 0,79" / 20 mm, Conning tower: 7,99" / 203 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 1 111 ihp / 829 Kw = 11,50 kts
Range 2 000nm at 6,00 kts
Bunker at max displacement = 132 tons (100% coal)
Complement:
164 - 214
Cost:
£0,200 million / $0,801 million
Distribution of weights at normal displacement:
Armament: 112 tons, 4,9%
Armour: 775 tons, 34,1%
- Belts: 307 tons, 13,5%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 339 tons, 14,9%
- Armour Deck: 100 tons, 4,4%
- Conning Tower: 30 tons, 1,3%
Machinery: 240 tons, 10,5%
Hull, fittings & equipment: 955 tons, 42,0%
Fuel, ammunition & stores: 193 tons, 8,5%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2 152 lbs / 976 Kg = 9,6 x 8,3 " / 210 mm shells or 0,8 torpedoes
Stability (Unstable if below 1.00): 1,03
Metacentric height 1,5 ft / 0,5 m
Roll period: 14,7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0,52
Seaboat quality (Average = 1.00): 1,42
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,601
Length to Beam Ratio: 5,16 : 1
'Natural speed' for length: 14,84 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -16,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 8,37 ft / 2,55 m
- Forecastle (20%): 8,37 ft / 2,55 m
- Mid (50%): 8,37 ft / 2,55 m
- Quarterdeck (15%): 8,37 ft / 2,55 m
- Stern: 8,37 ft / 2,55 m
- Average freeboard: 8,37 ft / 2,55 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 72,7%
- Above water (accommodation/working, high = better): 66,8%
Waterplane Area: 6 874 Square feet or 639 Square metres
Displacement factor (Displacement / loading): 106%
Structure weight / hull surface area: 100 lbs/sq ft or 486 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,91
- Longitudinal: 2,19
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
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