Trakai-class Battleship (1903)

Trakai, Liotainian Battleship laid down 1903

Displacement:
 13,267 t light; 14,030 t standard; 15,847 t normal; 17,301 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (479.00 ft / 475.72 ft) x 75.13 ft x (28.22 / 30.25 ft)
 (146.00 m / 145.00 m) x 22.90 m x (8.60 / 9.22 m)

Armament:

```
     4 - 12.20" / 310 mm 40.0 cal guns - 871.18lbs / 395.16kg shells, 125 per gun

```

 Breech loading guns in turret on barbette mounts, 1899 Model
 2 x 2-gun mounts on centreline ends, evenly spread

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     16 - 5.12" / 130 mm 45.0 cal guns - 67.62lbs / 30.67kg shells, 180 per gun

```

 Quick firing guns in casemate mounts, 1903 Model
 16 x Single mounts on sides, evenly spread
 4 raised mounts

```
     8 - 3.94" / 100 mm 50.0 cal guns - 32.30lbs / 14.65kg shells, 450 per gun

```

 Quick firing guns in casemate mounts, 1902 Model
 8 x Single mounts on sides, evenly spread
 8 hull mounts in casemates- Limited use in all but light seas

```
     16 - 2.36" / 60.0 mm 50.0 cal guns - 6.99lbs / 3.17kg shells, 500 per gun

```

 Quick firing guns in deck mounts, 1902 Model
 16 x Single mounts on sides, evenly spread

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     Weight of broadside 4,937 lbs / 2,239 kg
     Main Torpedoes
     2 - 17.7" / 450 mm, 16.73 ft / 5.10 m torpedoes - 0.659 t each, 1.318 t total

```

 submerged side tubes

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     2nd Torpedoes
     8 - 17.7" / 450 mm, 16.73 ft / 5.10 m torpedoes - 0.659 t each, 5.274 t total

```

 below water reloads

Armour:

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

```

 Main: 10.2" / 260 mm 380.58 ft / 116.00 m 10.50 ft / 3.20 m
 Ends: 3.94" / 100 mm 95.11 ft / 28.99 m 10.50 ft / 3.20 m
 Upper: 3.94" / 100 mm 380.58 ft / 116.00 m 8.20 ft / 2.50 m
 Main Belt covers 123 % of normal length

```
  - Torpedo Bulkhead - Strengthened structural bulkheads:

```

 15.7" / 400 mm 380.58 ft / 116.00 m 26.25 ft / 8.00 m
 Beam between torpedo bulkheads 67.26 ft / 20.50 m

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

```

 Main: 12.2" / 310 mm 7.87" / 200 mm 10.6" / 270 mm
 2nd: 3.94" / 100 mm 2.76" / 70 mm 3.94" / 100 mm
 3rd: 3.15" / 80 mm - -
 4th: 0.59" / 15 mm - -

```
  - Armoured deck - single deck:

```

 For and Aft decks: 2.36" / 60 mm
 Forecastle: 1.18" / 30 mm Quarter deck: 1.18" / 30 mm

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

```

Machinery:
 Coal and oil fired boilers, steam turbines,
 Direct drive, 2 shafts, 29,516 shp / 22,019 Kw = 22.00 kts
 Range 8,000nm at 10.00 kts
 Bunker at max displacement = 3,271 tons (90% coal)

Complement:
 706 - 918

Cost:
 £1.337 million / $5.347 million

Distribution of weights at normal displacement:
 Armament: 946 tons, 6.0 %
 - Guns: 937 tons, 5.9 %
 - Weapons: 9 tons, 0.1 %
 Armour: 10,301 tons, 65.0 %
 - Belts: 2,344 tons, 14.8 %
 - Torpedo bulkhead: 5,820 tons, 36.7 %
 - Armament: 947 tons, 6.0 %
 - Armour Deck: 1,056 tons, 6.7 %
 - Conning Tower: 134 tons, 0.8 %
 Machinery: 3,653 tons, 23.1 %
 Hull, fittings & equipment: -1,833 tons, -11.6 %
 Fuel, ammunition & stores: 2,580 tons, 16.3 %
 Miscellaneous weights: 200 tons, 1.3 %
 - Hull below water: 50 tons
 - Hull above water: 75 tons
 - On freeboard deck: 50 tons
 - Above deck: 25 tons

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
 16,753 lbs / 7,599 Kg = 18.4 x 12.2 " / 310 mm shells or 6.4 torpedoes
 Stability (Unstable if below 1.00): 1.72
 Metacentric height 7.9 ft / 2.4 m
 Roll period: 11.2 seconds
 Steadiness - As gun platform (Average = 50 %): 68 %
 - Recoil effect (Restricted arc if above 1.00): 0.22
 Seaboat quality (Average = 1.00): 1.36

Hull form characteristics:
 Hull has rise forward of midbreak,
 a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.550 / 0.560
 Length to Beam Ratio: 6.33 : 1
 'Natural speed' for length: 21.81 kts
 Power going to wave formation at top speed: 51 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -10.00 degrees
 Stern overhang: -1.97 ft / -0.60 m
 Freeboard (% = length of deck as a percentage of waterline length):
 Fore end, Aft end
 - Forecastle: 15.00 %, 21.33 ft / 6.50 m, 20.34 ft / 6.20 m
 - Forward deck: 25.00 %, 20.34 ft / 6.20 m, 20.01 ft / 6.10 m
 - Aft deck: 55.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
 - Quarter deck: 5.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
 - Average freeboard: 14.06 ft / 4.29 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 109.9 %
 - Above water (accommodation/working, high = better): 88.0 %
 Waterplane Area: 24,944 Square feet or 2,317 Square metres
 Displacement factor (Displacement / loading): 75 %
 Structure weight / hull surface area: 125 lbs/sq ft or 608 Kg/sq metre
 Hull strength (Relative):
 - Cross-sectional: 0.95
 - Longitudinal: 1.63
 - Overall: 1.01
 Adequate machinery, storage, compartmentation space
 Cramped accommodation and workspace room
 Good seaboat, rides out heavy weather easily