Pegasum Class Armored Cruiser

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The oldest of the Imperial Navy's armored cruisers, Pegasum is somewhat conventional. While hopelessly obsolete in 1910, there are still roles she can fill.

One Ship:
--IRS Pegasum

Pegasum, Imperial Roman Republic Armored Cruiser laid down 1893

Displacement:
   9,600 t light; 9,982 t standard; 10,993 t normal; 11,802 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (475.72 ft / 475.72 ft) x 63.98 ft x (26.25 / 27.67 ft)
   (145.00 m / 145.00 m) x 19.50 m  x (8.00 / 8.43 m)

Armament:
      2 - 8.27" / 210 mm 40.0 cal guns - 242.51lbs / 110.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1893 Model
     2 x Single mounts on centreline ends, evenly spread
      14 - 5.51" / 140 mm 45.0 cal guns - 79.37lbs / 36.00kg shells, 175 per gun
     Breech loading guns in casemate mounts, 1890 Model
     8 x Single mounts on sides, evenly spread
     6 x Single mounts on sides, forward evenly spread
      6 hull mounts in casemates- Limited use in heavy seas
      8 - 2.95" / 75.0 mm 45.0 cal guns - 13.23lbs / 6.00kg shells, 450 per gun
     Breech loading guns in deck mounts, 1890 Model
     6 x Single mounts on sides, evenly spread
      6 raised mounts
     2 x Single mounts on centreline ends, evenly spread
      2 raised mounts
      4 - 1.77" / 45.0 mm 40.0 cal guns - 2.76lbs / 1.25kg shells, 150 per gun
     Breech loading guns in deck mounts, 1885 Model
     4 x Single mounts on side ends, evenly spread
      Weight of broadside 1,713 lbs / 777 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.91" / 150 mm   378.28 ft / 115.30 m   9.61 ft / 2.93 m
   Ends:   1.97" / 50 mm     97.41 ft / 29.69 m   9.61 ft / 2.93 m
   Upper:   3.94" / 100 mm   378.28 ft / 115.30 m   8.01 ft / 2.44 m
     Main Belt covers 122 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.91" / 150 mm   3.94" / 100 mm      5.91" / 150 mm
   2nd:   3.94" / 100 mm   0.98" / 25 mm      3.94" / 100 mm
   3rd:   0.59" / 15 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 1.18" / 30 mm
   Forecastle: 0.59" / 15 mm  Quarter deck: 0.59" / 15 mm

   - Conning towers: Forward 5.91" / 150 mm, Aft 3.94" / 100 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 3 shafts, 20,000 ihp / 14,920 Kw = 21.28 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 1,819 tons (100% coal)

Complement:
   536 - 697

Cost:
   £0.971 million / $3.885 million

Distribution of weights at normal displacement:
   Armament: 332 tons, 3.0 %
      - Guns: 332 tons, 3.0 %
   Armour: 2,253 tons, 20.5 %
      - Belts: 1,425 tons, 13.0 %
      - Armament: 303 tons, 2.8 %
      - Armour Deck: 420 tons, 3.8 %
      - Conning Towers: 105 tons, 1.0 %
   Machinery: 3,774 tons, 34.3 %
   Hull, fittings & equipment: 3,052 tons, 27.8 %
   Fuel, ammunition & stores: 1,393 tons, 12.7 %
   Miscellaneous weights: 190 tons, 1.7 %
      - Hull below water: 20 tons
      - Hull above water: 100 tons
      - On freeboard deck: 50 tons
      - Above deck: 20 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,469 lbs / 3,842 Kg = 30.0 x 8.3 " / 210 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.53
   Metacentric height 5.3 ft / 1.6 m
   Roll period: 11.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.16
   Seaboat quality  (Average = 1.00): 1.78

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.482 / 0.491
   Length to Beam Ratio: 7.44 : 1
   'Natural speed' for length: 21.81 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 39
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   10.24 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   60.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   19.52 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Quarter deck:   10.24 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      16.18 ft / 4.93 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 122.3 %
      - Above water (accommodation/working, high = better): 118.0 %
   Waterplane Area: 19,946 Square feet or 1,853 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 102 lbs/sq ft or 500 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.76
      - Overall: 1.00
   Cramped 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

Misc Distribution
--Below Water (20t)
----18t 12x350mm Torpedos (35 Pattern A)
----2t Additional Torpedo Handing Equipment
--Above Water (100t)
----30t Flag Facilities
----30t Improved Officer Accommodations
----30t Improved Crew Accommodations
----20t Construction Reserve
--On Deck (50t)
----30t Flag Facilities
----10t Admiralty Accommodations
----10t Construction Reserve
--Above Deck (20t)
----10t Improved Aquisition Structures
----5t Additional Searchlights
----5t Improved Signaling Equipment