Ottoman Small Cruiser Design Request

[Desertfox]

From New ZIon:


Lavi II, New Zion Destroyer laid down 1912

Displacement:
   2,909 t light; 3,028 t standard; 3,385 t normal; 3,671 t full load

Dimensions: Length overall / water x beam x draught
   390.00 ft / 390.00 ft x 39.00 ft x 19.00 ft (normal load)
   118.87 m / 118.87 m x 11.89 m  x 5.79 m

Armament:
     3 - 5.91" / 150 mm guns in single mounts, 102.98lbs / 46.71kg shells, 1912 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, majority aft, 1 raised mount aft
     2 - 5.91" / 150 mm guns in single mounts, 102.98lbs / 46.71kg shells, 1912 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
     4 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side, evenly spread
     8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1912 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 567 lbs / 257 kg
   Shells per gun, main battery: 150
   6 - 17.7" / 449.58 mm above water torpedoes

Armour:
  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -               -

  - Armour deck: 1.00" / 25 mm

Machinery:
   Coal fired boilers, steam turbines,
   Geared drive, 2 shafts, 28,924 shp / 21,577 Kw = 28.00 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 642 tons (100% coal)

Complement:
   221 - 288

Cost:
   £0.337 million / $1.347 million

Distribution of weights at normal displacement:
   Armament: 71 tons, 2.1 %
   Armour: 185 tons, 5.5 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 10 tons, 0.3 %
      - Armour Deck: 174 tons, 5.1 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 1,253 tons, 37.0 %
   Hull, fittings & equipment: 1,175 tons, 34.7 %
   Fuel, ammunition & stores: 476 tons, 14.1 %
   Miscellaneous weights: 225 tons, 6.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,643 lbs / 745 Kg = 16.0 x 5.9 " / 150 mm shells or 0.5 torpedoes
   Stability (Unstable if below 1.00): 1.18
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 12.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.37
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.410
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 19.75 kts
   Power going to wave formation at top speed: 56 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      21.00 ft / 6.40 m
      - Forecastle (35 %):   15.00 ft / 4.57 m
      - Mid (40 %):      15.00 ft / 4.57 m (10.00 ft / 3.05 m aft of break)
      - Quarterdeck (15 %):   10.00 ft / 3.05 m
      - Stern:      10.00 ft / 3.05 m
      - Average freeboard:   12.84 ft / 3.91 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 143.2 %
      - Above water (accommodation/working, high = better): 68.8 %
   Waterplane Area: 9,419 Square feet or 875 Square metres
   Displacement factor (Displacement / loading): 96 %
   Structure weight / hull surface area: 69 lbs/sq ft or 336 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.84
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped

[The Rock Doctor]

I think some of these designs would have deck-space issues that SS doesn't consider.

[Jefgte]

Nothing better from ADB (Armada Design Bureau)
The last one is a torpedo cruiser, not a minelayer

The best for me is from Cape Town Shipbuilders  ;)

[miketr]

The Ottomans are going to go with the improved design offered by Cape Town Shipbuilders.

[P3D]

Cape Town shipbuilders are pleased, plans are sent to Basra with the next mail steamer.