Persian Destroyer

[ledeper]

Quom II class, persia Destroyer laid down 1909 (Engine 1906)

Displacement:
   464 t light; 488 t standard; 532 t normal; 566 t full load

Dimensions: Length overall / water x beam x draught
   216,67 ft / 213,25 ft x 22,97 ft x 9,84 ft (normal load)
   66,04 m / 65,00 m x 7,00 m  x 3,00 m

Armament:
      3 - 4,92" / 125 mm guns in single mounts, 59,59lbs / 27,03kg shells, 1909 Model
     Quick firing guns in deck mounts
     on centreline ends, majority forward, 1 raised mount
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1909 Model
     Quick firing guns in deck mounts
     on side, all amidships
   Weight of broadside 187 lbs / 85 kg
   Shells per gun, main battery: 130
   2 - 18,0" / 457,2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,25" / 6 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 8.909 shp / 6.646 Kw = 26,00 kts@ 28 kts
   Range 1.500nm at 12,00 kts
   Bunker at max displacement = 78 tons

Complement:
   54 - 71

Cost:
   £0,071 million / $0,284 million

Distribution of weights at normal displacement:
   Armament: 23 tons, 4,4 %
   Armour: 2 tons, 0,4 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 2 tons, 0,4 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 0 tons, 0,0 %
   Machinery: 251 tons, 47,1 %
   Hull, fittings & equipment: 158 tons, 29,7 %
   Fuel, ammunition & stores: 68 tons, 12,8 %
   Miscellaneous weights: 30 tons, 5,6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     132 lbs / 60 Kg = 2,2 x 4,9 " / 125 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,32
   Metacentric height 0,9 ft / 0,3 m
   Roll period: 10,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 58 %
         - Recoil effect (Restricted arc if above 1.00): 0,54
   Seaboat quality  (Average = 1.00): 1,15

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,386
   Length to Beam Ratio: 9,29 : 1
   'Natural speed' for length: 14,60 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,08 ft / 4,90 m
      - Forecastle (10 %):   10,24 ft / 3,12 m
      - Mid (40 %):      10,24 ft / 3,12 m
      - Quarterdeck (15 %):   10,24 ft / 3,12 m
      - Stern:      10,24 ft / 3,12 m
      - Average freeboard:   10,47 ft / 3,19 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 191,2 %
      - Above water (accommodation/working, high = better): 85,7 %
   Waterplane Area: 2.993 Square feet or 278 Square metres
   Displacement factor (Displacement / loading): 39 %
   Structure weight / hull surface area: 24 lbs/sq ft or 119 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 3,18
      - Overall: 0,60
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped


radio 10t
torpedoes 5t