Persian Ligth Cruiser

[ledeper]

Mozzafar-al-Din , Persia Ligth Cruiser laid down 1909 (Engine 1906)

Displacement:
   2.579 t light; 2.662 t standard; 3.053 t normal; 3.366 t full load

Dimensions: Length overall / water x beam x draught
   369,01 ft / 367,45 ft x 42,65 ft x 13,94 ft (normal load)
   112,48 m / 112,00 m x 13,00 m  x 4,25 m

Armament:
      3 - 4,00" / 102 mm guns in single mounts, 32,00lbs / 14,51kg shells, 1909 Model
     Quick firing guns in deck mounts
     on centreline ends, majority forward, 1 raised mount
      4 - 4,00" / 102 mm guns in single mounts, 32,00lbs / 14,51kg shells, 1909 Model
     Quick firing guns in deck mounts
     on side, all amidships
      2 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1909 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 228 lbs / 103 kg
   Shells per gun, main battery: 150
   2 - 18,0" / 457,2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1,00" / 25 mm   1,00" / 25 mm            -
   2nd:   1,00" / 25 mm   1,00" / 25 mm            -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 23.452 shp / 17.495 Kw = 26,50 kts
   Range 5.000nm at 12,00 kts
   Bunker at max displacement = 704 tons

Complement:
   204 - 266

Cost:
   £0,319 million / $1,278 million

Distribution of weights at normal displacement:
   Armament: 28 tons, 0,9 %
   Armour: 22 tons, 0,7 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 22 tons, 0,7 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 0 tons, 0,0 %
   Machinery: 1.466 tons, 48,0 %
   Hull, fittings & equipment: 993 tons, 32,5 %
   Fuel, ammunition & stores: 474 tons, 15,5 %
   Miscellaneous weights: 70 tons, 2,3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1.664 lbs / 755 Kg = 52,0 x 4,0 " / 102 mm shells or 0,5 torpedoes
   Stability (Unstable if below 1.00): 1,67
   Metacentric height 3,3 ft / 1,0 m
   Roll period: 9,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 54 %
         - Recoil effect (Restricted arc if above 1.00): 0,05
   Seaboat quality  (Average = 1.00): 1,07

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,489
   Length to Beam Ratio: 8,62 : 1
   'Natural speed' for length: 19,17 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 5,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      17,81 ft / 5,43 m
      - Forecastle (10 %):   13,42 ft / 4,09 m
      - Mid (50 %):      13,42 ft / 4,09 m
      - Quarterdeck (15 %):   13,42 ft / 4,09 m
      - Stern:      13,42 ft / 4,09 m
      - Average freeboard:   13,59 ft / 4,14 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 164,9 %
      - Above water (accommodation/working, high = better): 121,2 %
   Waterplane Area: 10.339 Square feet or 961 Square metres
   Displacement factor (Displacement / loading): 91 %
   Structure weight / hull surface area: 61 lbs/sq ft or 296 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,55
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent