Rokantiskes-class Battleship (1893)

Rokantiskes-class, Liotainian Battleship laid down 1893

Displacement:
 7,979 t light; 8,452 t standard; 9,240 t normal; 9,870 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (400.26 ft / 393.70 ft) x 60.70 ft x (24.61 / 25.93 ft)
 (122.00 m / 120.00 m) x 18.50 m x (7.50 / 7.90 m)

Armament:

```
     4 - 10.79" / 274 mm 45.0 cal guns - 633.01lbs / 287.13kg shells, 120 per gun

```

 Breech loading guns in turret on barbette mounts, 1892 Model
 4 x 2-gun mounts on centreline ends, evenly spread

```
     10 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 170 per gun

```

 Quick firing guns in casemate mounts, 1890 Model
 10 x Single mounts on sides, evenly spread

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     12 - 2.36" / 60.0 mm 45.0 cal guns - 6.39lbs / 2.90kg shells, 500 per gun

```

 Quick firing guns in deck mounts, 1885 Model
 12 x Single mounts on sides, evenly spread

```
     Weight of broadside 3,647 lbs / 1,654 kg
     Main Torpedoes
     4 - 17.7" / 450 mm, 11.48 ft / 3.50 m torpedoes - 0.322 t each, 1.287 t total

```

 In 4 sets of deck mounted carriage/fixed tubes

Armour:

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

```

 Main: 11.8" / 300 mm 213.25 ft / 65.00 m 9.84 ft / 3.00 m
 Ends: 3.94" / 100 mm 98.43 ft / 30.00 m 9.22 ft / 2.81 m
 82.02 ft / 25.00 m Unarmoured ends
 Upper: 3.94" / 100 mm 213.25 ft / 65.00 m 8.01 ft / 2.44 m
 Main Belt covers 83 % of normal length

```
  - Torpedo Bulkhead - Strengthened structural bulkheads:

```

 1.18" / 30 mm 213.25 ft / 65.00 m 22.97 ft / 7.00 m
 Beam between torpedo bulkheads 57.41 ft / 17.50 m

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

```

 Main: 11.8" / 300 mm 7.87" / 200 mm 10.6" / 270 mm
 2nd: 1.18" / 30 mm 0.79" / 20 mm -
 3rd: 0.79" / 20 mm - -

```
  - Armoured deck - single deck:

```

 For and Aft decks: 2.17" / 55 mm
 Forecastle: 0.79" / 20 mm Quarter deck: 0.79" / 20 mm

```
  - Conning towers: Forward 10.63" / 270 mm, Aft 0.00" / 0 mm

```

Machinery:
 Coal fired boilers, simple reciprocating steam engines,
 Direct drive, 2 shafts, 7,133 ihp / 5,321 Kw = 16.30 kts
 Range 3,500nm at 12.00 kts
 Bunker at max displacement = 1,419 tons (100% coal)

Complement:
 470 - 612

Cost:
 £0.757 million / $3.030 million

Distribution of weights at normal displacement:
 Armament: 764 tons, 8.3 %
 - Guns: 763 tons, 8.3 %
 - Weapons: 2 tons, 0.0 %
 Armour: 3,323 tons, 36.0 %
 - Belts: 1,556 tons, 16.8 %
 - Torpedo bulkhead: 214 tons, 2.3 %
 - Armament: 891 tons, 9.6 %
 - Armour Deck: 561 tons, 6.1 %
 - Conning Tower: 101 tons, 1.1 %
 Machinery: 1,346 tons, 14.6 %
 Hull, fittings & equipment: 2,425 tons, 26.2 %
 Fuel, ammunition & stores: 1,261 tons, 13.6 %
 Miscellaneous weights: 120 tons, 1.3 %
 - Hull below water: 40 tons
 - Hull above water: 40 tons
 - On freeboard deck: 20 tons
 - Above deck: 20 tons

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
 10,731 lbs / 4,867 Kg = 17.1 x 10.8 " / 274 mm shells or 8.9 torpedoes
 Stability (Unstable if below 1.00): 1.14
 Metacentric height 3.0 ft / 0.9 m
 Roll period: 14.7 seconds
 Steadiness - As gun platform (Average = 50 %): 82 %
 - Recoil effect (Restricted arc if above 1.00): 0.70
 Seaboat quality (Average = 1.00): 1.64

Hull form characteristics:
 Hull has rise forward of midbreak,
 a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.550 / 0.558
 Length to Beam Ratio: 6.49 : 1
 'Natural speed' for length: 19.84 kts
 Power going to wave formation at top speed: 39 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -10.00 degrees
 Stern overhang: -6.56 ft / -2.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
 Fore end, Aft end
 - Forecastle: 30.00 %, 21.82 ft / 6.65 m, 17.85 ft / 5.44 m
 - Forward deck: 30.00 %, 17.85 ft / 5.44 m, 17.85 ft / 5.44 m
 - Aft deck: 25.00 %, 8.92 ft / 2.72 m, 8.92 ft / 2.72 m
 - Quarter deck: 15.00 %, 8.92 ft / 2.72 m, 8.92 ft / 2.72 m
 - Average freeboard: 14.75 ft / 4.50 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 82.7 %
 - Above water (accommodation/working, high = better): 92.8 %
 Waterplane Area: 16,677 Square feet or 1,549 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 118 lbs/sq ft or 577 Kg/sq metre
 Hull strength (Relative):
 - Cross-sectional: 0.92
 - Longitudinal: 2.12
 - Overall: 1.00
 Excellent machinery, storage, compartmentation space
 Adequate 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