Erelis-class Armoured Cruiser (1894)

Erelis-class Armoured Cruiser

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)

   (501.97 ft / 492.13 ft) x 65.62 ft x (23.62 / 25.62 ft)

   (153.00 m / 150.00 m) x 20.00 m  x (7.20 / 7.81 m)

### Armament:

     4 - 8.66" / 220 mm 45.0 cal guns - 327.66lbs / 148.62kg shells, 150 per gun

     Breech loading guns in casemate mounts, 1894 Model

     4 x Single mounts on side ends, evenly spread

     16 - 5.12" / 130 mm 45.0 cal guns - 67.62lbs / 30.67kg shells, 300 per gun

     Quick firing guns in casemate mounts, 1894 Model

     14 x Single mounts on sides, evenly spread

       8 hull mounts in casemates- Limited use in heavy seas

     2 x Single mounts on centreline ends, evenly spread

     20 - 2.36" / 60.0 mm 45.0 cal guns - 6.39lbs / 2.90kg shells, 300 per gun

     Quick firing guns in deck mounts, 1885 Model

     20 x Single mounts on sides, evenly spread

     20 - 1.77" / 45.0 mm 45.0 cal guns - 2.70lbs / 1.22kg shells, 450 per gun

     Quick firing guns in deck mounts, 1885 Model

     20 x Single mounts on sides, evenly spread

     Weight of broadside 2,574 lbs / 1,168 kg

     Main Torpedoes

     4 - 17.7" / 450 mm, 16.73 ft / 5.10 m torpedoes - 0.479 t each, 1.918 t total

   In 4 sets of deck mounted carriage/fixed tubes

     2nd Torpedoes

     8 - 17.7" / 450 mm, 16.73 ft / 5.10 m torpedoes - 0.479 t each, 3.835 t total

   In 4 sets of deck mounted reloads

### Armour:

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

   Main:    7.87" / 200 mm    328.08 ft / 100.00 m    11.48 ft / 3.50 m

   Ends:    3.94" / 100 mm    164.04 ft / 50.00 m    9.84 ft / 3.00 m

   Upper:    3.15" / 80 mm    328.08 ft / 100.00 m    6.56 ft / 2.00 m

     Main Belt covers 103 % of normal length

  - Torpedo Bulkhead - Strengthened structural bulkheads:

       1.97" / 50 mm    328.08 ft / 100.00 m    26.25 ft / 8.00 m

   Beam between torpedo bulkheads 59.06 ft / 18.00 m

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

   Main:    6.30" / 160 mm    3.15" / 80 mm        3.15" / 80 mm

   2nd:    3.15" / 80 mm    1.97" / 50 mm        2.36" / 60 mm

  - Armoured deck - single deck:

   For and Aft decks: 2.56" / 65 mm

   Forecastle: 1.57" / 40 mm  Quarter deck: 1.57" / 40 mm

  - Conning towers: Forward 7.87" / 200 mm, Aft 0.00" / 0 mm

### Machinery:

   Coal fired boilers, complex reciprocating steam engines,

   Direct drive, 3 shafts, 13,184 ihp / 9,835 Kw = 19.00 kts

   Range 9,500nm at 10.00 kts

   Bunker at max displacement = 2,795 tons (100% coal)

### Distribution of weights at normal displacement:

   Armament: 422 tons, 3.8 %

      - Guns: 415 tons, 3.7 %

      - Weapons: 7 tons, 0.1 %

   Armour: 3,696 tons, 33.3 %

      - Belts: 1,772 tons, 15.9 %

      - Torpedo bulkhead: 627 tons, 5.6 %

      - Armament: 250 tons, 2.3 %

      - Armour Deck: 962 tons, 8.7 %

      - Conning Tower: 84 tons, 0.8 %

   Machinery: 2,273 tons, 20.5 %

   Hull, fittings & equipment: 2,324 tons, 20.9 %

   Fuel, ammunition & stores: 2,100 tons, 18.9 %

   Miscellaneous weights: 300 tons, 2.7 %

      - Hull below water: 100 tons

      - Hull above water: 100 tons

      - On freeboard deck: 50 tons

      - Above deck: 50 tons

### Overall survivability and seakeeping ability:

   Survivability (Non-critical penetrating hits needed to sink ship):

     15,988 lbs / 7,252 Kg = 49.2 x 8.7 " / 220 mm shells or 7.6 torpedoes

   Stability (Unstable if below 1.00): 1.56

   Metacentric height 5.6 ft / 1.7 m

   Roll period: 11.6 seconds

   Steadiness    - As gun platform (Average = 50 %): 92 %

           - Recoil effect (Restricted arc if above 1.00): 0.16

   Seaboat quality  (Average = 1.00): 1.83

### Hull form characteristics:

   Hull has rise forward of midbreak,

     a ram bow and a cruiser stern

   Block coefficient (normal/deep): 0.510 / 0.523

   Length to Beam Ratio: 7.50 : 1

   'Natural speed' for length: 22.18 kts

   Power going to wave formation at top speed: 38 %

   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:    20.00 %,  24.61 ft / 7.50 m,  21.33 ft / 6.50 m

      - Forward deck:    20.00 %,  21.33 ft / 6.50 m,  21.33 ft / 6.50 m

      - Aft deck:    45.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m

      - Quarter deck:    15.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m

      - Average freeboard:        16.67 ft / 5.08 m

### Ship space, strength and comments:

   Space    - Hull below water (magazines/engines, low = better): 90.4 %

       - Above water (accommodation/working, high = better): 117.1 %

   Waterplane Area: 21,713 Square feet or 2,017 Square metres

   Displacement factor (Displacement / loading): 114 %

   Structure weight / hull surface area: 97 lbs/sq ft or 474 Kg/sq metre

   Hull strength (Relative):

       - Cross-sectional: 0.96

       - Longitudinal: 1.47

       - Overall: 1.00

   Adequate 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