Scout Cruisers

[Darman]

Sentinel, United Kingdom Scout Cruiser laid down 1898 (Engine 1900)

Displacement:
   2,825 t light; 2,904 t standard; 3,226 t normal; 3,483 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (360.00 ft / 360.00 ft) x 40.00 ft x (14.00 / 14.89 ft)
   (109.73 m / 109.73 m) x 12.19 m  x (4.27 / 4.54 m)

Armament:
      10 - 3.00" / 76.2 mm 40.0 cal guns - 12.00lbs / 5.44kg shells, 175 per gun
     Quick firing guns in deck mounts, 1898 Model
     10 x Single mounts on sides amidships
      8 - 1.85" / 47.0 mm 40.0 cal guns - 3.00lbs / 1.36kg shells, 250 per gun
     Quick firing guns in deck mounts, 1898 Model
     8 x Single mounts on sides, evenly spread
      Weight of broadside 144 lbs / 65 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.75" / 19 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 12,945 ihp / 9,657 Kw = 22.50 kts
   Range 3,000nm at 12.00 kts
   Bunker at max displacement = 579 tons (100% coal)

Complement:
   213 - 278

Cost:
   £0.365 million / $1.461 million

Distribution of weights at normal displacement:
   Armament: 27 tons, 0.8 %
   Armour: 16 tons, 0.5 %
      - Armament: 16 tons, 0.5 %
   Machinery: 1,852 tons, 57.4 %
   Hull, fittings & equipment: 924 tons, 28.6 %
   Fuel, ammunition & stores: 401 tons, 12.4 %
   Miscellaneous weights: 6 tons, 0.2 %
      - Hull above water: 6 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,330 lbs / 603 Kg = 98.5 x 3.0 " / 76 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.78
   Metacentric height 3.2 ft / 1.0 m
   Roll period: 9.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 78 %
         - Recoil effect (Restricted arc if above 1.00): 0.04
   Seaboat quality  (Average = 1.00): 1.56

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.560 / 0.569
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 18.97 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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:   20.00 %,  20.87 ft / 6.36 m,  13.28 ft / 4.05 m
      - Forward deck:   30.00 %,  13.28 ft / 4.05 m,  13.28 ft / 4.05 m
      - Aft deck:   35.00 %,  13.28 ft / 4.05 m,  13.28 ft / 4.05 m
      - Quarter deck:   15.00 %,  13.28 ft / 4.05 m,  13.28 ft / 4.05 m
      - Average freeboard:      13.89 ft / 4.23 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 187.8 %
      - Above water (accommodation/working, high = better): 120.5 %
   Waterplane Area: 10,145 Square feet or 942 Square metres
   Displacement factor (Displacement / loading): 78 %
   Structure weight / hull surface area: 57 lbs/sq ft or 277 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.52
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Misc Weight:
6t for 2 hull-mounted fixed bow torpedo tubes with 4 reloads total. 

Historic Vessels: None (Suggested names: Sentinel, Skirmisher, Adventure, Attentive, Forward, Foresight, Pathfinder, Patrol)

HMS Sentinel
HMS Skirmisher
HMS Forward
HMS Foresight
HMS Adventure
HMS Attentive
HMS Surprise
HMS Alacrity
HMS Pathfinder
HMS Patrol