Persian Light Cruiser

Started by ledeper, February 12, 2009, 09:49:51 AM

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ledeper

Mozzafar-al-Din , Persia Light 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 / 0,89kg 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

P3D

Max power should be 5,000SHP/shaft, and 1905 engines.

I agree with the oil-firing, though.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Carthaginian

At this point, I'd say purchasing these size ships should be Persia's plan of action. You can probably buy ships more capable from other nations for a price less than the cost of building these unarmored cruisers.
So 'ere's to you, Fuzzy-Wuzzy, at your 'ome in old Baghdad;
You're a pore benighted 'eathen but a first-class fightin' man;
We gives you your certificate, an' if you want it signed
We'll come an' 'ave a romp with you whenever you're inclined.

P3D

Quote from: Carthaginian on February 12, 2009, 01:53:56 PM
At this point, I'd say purchasing these size ships should be Persia's plan of action. You can probably buy ships more capable from other nations for a price less than the cost of building these unarmored cruisers.

Problem is, the NPCs cannot retroactively purchase foreign built ships, so they have to fill out their 1909-15 fleet from their own BP.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Carthaginian

They may not be able to purchase them retroactively- as none of us can- but they can concentrate on more survivable vessels than unarmored cruisers and then purchase cruiser-type vessels later on. ;) I know it's perhaps not as much fun, but it might leave them with a better fleet in the end.
So 'ere's to you, Fuzzy-Wuzzy, at your 'ome in old Baghdad;
You're a pore benighted 'eathen but a first-class fightin' man;
We gives you your certificate, an' if you want it signed
We'll come an' 'ave a romp with you whenever you're inclined.

P3D

The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas