Osmanieh, Turkish Battleship laid down 1929
Displacement:
26,970 t light; 28,643 t standard; 30,933 t normal; 32,764 t full load
Dimensions: Length overall / water x beam x draught
692.12 ft / 680.00 ft x 102.00 ft x 28.38 ft (normal load)
210.96 m / 207.26 m x 31.09 m x 8.65 m
Armament:
8 - 13.78" / 350 mm guns (2x4 guns), 1,308.33lbs / 593.45kg shells, 1929 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 5.91" / 150 mm guns (2x2 guns), 103.21lbs / 46.82kg shells, 1929 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, all raised mounts
8 - 5.91" / 150 mm guns (4x2 guns), 103.21lbs / 46.82kg shells, 1929 Model
Anti-aircraft guns in turrets (on barbettes)
on side, all amidships
16 - 4.13" / 105 mm guns (8x2 guns), 35.22lbs / 15.98kg shells, 1929 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
16 - 1.46" / 37.1 mm guns (8x2 guns), 1.56lbs / 0.71kg shells, 1929 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 12,294 lbs / 5,576 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.8" / 375 mm 398.00 ft / 121.31 m 11.80 ft / 3.60 m
Ends: Unarmoured
Main Belt covers 90 % of normal length
- Torpedo Bulkhead:
1.00" / 25 mm 398.00 ft / 121.31 m 26.00 ft / 7.92 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.8" / 400 mm 11.8" / 298 mm 13.8" / 349 mm
2nd: 3.15" / 80 mm 1.38" / 35 mm 3.15" / 80 mm
3rd: 3.15" / 80 mm 1.38" / 35 mm 3.15" / 80 mm
4th: 1.00" / 25 mm - -
5th: 0.78" / 20 mm - -
- Armour deck: 4.50" / 114 mm, Conning tower: 14.00" / 356 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 99,196 shp / 74,000 Kw = 27.82 kts
Range 14,500nm at 12.00 kts
Bunker at max displacement = 4,120 tons
Complement:
1,166 - 1,516
Cost:
£10.645 million / $42.581 million
Distribution of weights at normal displacement:
Armament: 1,537 tons, 5.0 %
Armour: 9,997 tons, 32.3 %
- Belts: 3,080 tons, 10.0 %
- Torpedo bulkhead: 383 tons, 1.2 %
- Armament: 2,207 tons, 7.1 %
- Armour Deck: 4,030 tons, 13.0 %
- Conning Tower: 297 tons, 1.0 %
Machinery: 3,047 tons, 9.8 %
Hull, fittings & equipment: 12,270 tons, 39.7 %
Fuel, ammunition & stores: 3,962 tons, 12.8 %
Miscellaneous weights: 120 tons, 0.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
43,271 lbs / 19,627 Kg = 33.1 x 13.8 " / 350 mm shells or 6.5 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 6.3 ft / 1.9 m
Roll period: 17.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.12
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.550
Length to Beam Ratio: 6.67 : 1
'Natural speed' for length: 26.08 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (25 %): 20.00 ft / 6.10 m
- Mid (0 %): 20.00 ft / 6.10 m
- Quarterdeck (15 %): 20.00 ft / 6.10 m
- Stern: 20.00 ft / 6.10 m
- Average freeboard: 20.60 ft / 6.28 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.8 %
- Above water (accommodation/working, high = better): 148.7 %
Waterplane Area: 48,406 Square feet or 4,497 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 186 lbs/sq ft or 911 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.44
- Overall: 1.01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform