Quom II class, Persia Destroyer laid down 1909 (Engine 1906)
Displacement:
486 t light; 511 t standard; 555 t normal; 591 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 / 0,88kg 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, 9.968 shp / 7.436 Kw = 26,45 kts
Range 1.500nm at 12,00 kts
Bunker at max displacement = 80 tons
Complement:
56 - 74
Cost:
£0,074 million / $0,296 million
Distribution of weights at normal displacement:
Armament: 23 tons, 4,2 %
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: 268 tons, 48,2 %
Hull, fittings & equipment: 162 tons, 29,3 %
Fuel, ammunition & stores: 69 tons, 12,5 %
Miscellaneous weights: 30 tons, 5,4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
135 lbs / 61 Kg = 2,3 x 4,9 " / 125 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,33
Metacentric height 0,9 ft / 0,3 m
Roll period: 10,1 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0,51
Seaboat quality (Average = 1.00): 1,04
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,403
Length to Beam Ratio: 9,29 : 1
'Natural speed' for length: 14,60 kts
Power going to wave formation at top speed: 68 %
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): 193,1 %
- Above water (accommodation/working, high = better): 83,4 %
Waterplane Area: 3.020 Square feet or 281 Square metres
Displacement factor (Displacement / loading): 37 %
Structure weight / hull surface area: 25 lbs/sq ft or 121 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,51
- Longitudinal: 3,14
- Overall: 0,61
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
radio 10t
torpedoes 5t
9 active ,2 building commissioned 5/17