Borrokalaria-class Ironclad Battleship (1883)

Borrokalaria-class, Syrellian Ironclad Battleship laid down 1883

Displacement:
 6,310 t light; 6,631 t standard; 7,644 t normal; 8,455 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (314.96 ft / 311.68 ft) x 65.62 ft x (23.79 / 25.78 ft)
 (96.00 m / 95.00 m) x 20.00 m x (7.25 / 7.86 m)

Armament:

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     4 - 9.20" / 234 mm 31.0 cal guns - 334.84lbs / 151.88kg shells, 130 per gun

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 Breech loading guns in turret on barbette mounts, 1881 Model
 4 x Single mounts on sides, evenly spread

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     6 - 5.91" / 150 mm 45.0 cal guns - 98.26lbs / 44.57kg shells, 150 per gun

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 Breech loading guns in casemate mounts, 1883 Model
 6 x Single mounts on sides, evenly spread

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     10 - 2.95" / 75.0 mm 50.0 cal guns - 12.90lbs / 5.85kg shells, 300 per gun

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 Quick firing guns in deck mounts, 1883 Model
 10 x Single mounts on sides, evenly spread

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     Weight of broadside 2,058 lbs / 933 kg

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Armour:

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  - Belts:		Width (max)	Length (avg)		Height (avg)

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 Main: 7.87" / 200 mm 202.59 ft / 61.75 m 9.71 ft / 2.96 m
 Ends: 3.15" / 80 mm 109.06 ft / 33.24 m 9.71 ft / 2.96 m
 Upper: 3.15" / 80 mm 202.59 ft / 61.75 m 8.01 ft / 2.44 m
 Main Belt covers 100 % of normal length

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  - Torpedo Bulkhead - Additional damage containing bulkheads:

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 1.57" / 40 mm 202.59 ft / 61.75 m 23.33 ft / 7.11 m
 Beam between torpedo bulkheads 55.77 ft / 17.00 m

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

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 Main: 5.91" / 150 mm 3.94" / 100 mm 3.94" / 100 mm
 2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
 3rd: 0.79" / 20 mm - -

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  - Armoured deck - single deck:

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 For and Aft decks: 2.36" / 60 mm

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  - Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm

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Machinery:
 Coal fired boilers, simple reciprocating steam engines,
 Direct drive, 2 shafts, 6,916 ihp / 5,159 Kw = 16.00 kts
 Range 6,000nm at 10.00 kts
 Bunker at max displacement = 1,825 tons (100% coal)

Complement:
 408 - 531

Cost:
 £0.535 million / $2.139 million

Distribution of weights at normal displacement:
 Armament: 372 tons, 4.9 %
 - Guns: 372 tons, 4.9 %
 Armour: 2,159 tons, 28.2 %
 - Belts: 1,061 tons, 13.9 %
 - Torpedo bulkhead: 275 tons, 3.6 %
 - Armament: 309 tons, 4.0 %
 - Armour Deck: 431 tons, 5.6 %
 - Conning Tower: 82 tons, 1.1 %
 Machinery: 1,375 tons, 18.0 %
 Hull, fittings & equipment: 2,139 tons, 28.0 %
 Fuel, ammunition & stores: 1,334 tons, 17.5 %
 Miscellaneous weights: 265 tons, 3.5 %
 - Hull below water: 75 tons
 - Hull above water: 100 tons
 - On freeboard deck: 60 tons
 - Above deck: 30 tons

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
 8,490 lbs / 3,851 Kg = 24.4 x 9.2 " / 234 mm shells or 2.1 torpedoes
 Stability (Unstable if below 1.00): 1.47
 Metacentric height 5.2 ft / 1.6 m
 Roll period: 12.1 seconds
 Steadiness - As gun platform (Average = 50 %): 95 %
 - Recoil effect (Restricted arc if above 1.00): 0.22
 Seaboat quality (Average = 1.00): 1.91

Hull form characteristics:
 Hull has raised forecastle, raised quarterdeck ,
 a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.550 / 0.561
 Length to Beam Ratio: 4.75 : 1
 'Natural speed' for length: 17.65 kts
 Power going to wave formation at top speed: 49 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -10.00 degrees
 Stern overhang: -3.28 ft / -1.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
 Fore end, Aft end
 - Forecastle: 25.00 %, 19.03 ft / 5.80 m, 19.03 ft / 5.80 m
 - Forward deck: 30.00 %, 10.83 ft / 3.30 m, 10.83 ft / 3.30 m
 - Aft deck: 20.00 %, 10.83 ft / 3.30 m, 10.83 ft / 3.30 m
 - Quarter deck: 25.00 %, 19.03 ft / 5.80 m, 19.03 ft / 5.80 m
 - Average freeboard: 14.93 ft / 4.55 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 90.8 %
 - Above water (accommodation/working, high = better): 72.1 %
 Waterplane Area: 14,273 Square feet or 1,326 Square metres
 Displacement factor (Displacement / loading): 121 %
 Structure weight / hull surface area: 112 lbs/sq ft or 546 Kg/sq metre
 Hull strength (Relative):
 - Cross-sectional: 0.90
 - Longitudinal: 2.95
 - Overall: 1.01
 Adequate machinery, storage, compartmentation space
 Cramped accommodation and workspace room
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather