Kocatepe refit.
The refit will include the removal of all weapons except 2 single 20mm guns and their replacement by two twin 4.1" sheilded mounts, a twin 88mm AA mount, two twin 37mm, two twin 20mm mounts, 8 single 12.7mm MG's and a quintuble 21" torpedo mount.
Kocatepe, Turkish Destroyer laid down 1916, refited in 1937
Displacement:
1,255 t light; 1,309 t standard; 1,538 t normal; 1,720 t full load
Dimensions: Length overall / water x beam x draught
326.92 ft / 325.00 ft x 30.00 ft x 12.00 ft (normal load)
99.65 m / 99.06 m x 9.14 m x 3.66 m
Armament:
4 - 4.13" / 105 mm guns (2x2 guns), 35.22lbs / 15.98kg shells, 1937 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
2 - 3.46" / 88.0 mm guns (1x2 guns), 20.78lbs / 9.43kg shells, 1937 Model
Dual purpose guns in deck mount
on centreline, all raised guns
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
6 - 0.79" / 20.0 mm guns (4 mounts), 0.24lbs / 0.11kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 191 lbs / 86 kg
Shells per gun, main battery: 200
5 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.58" / 40 mm 0.79" / 20 mm -
2nd: 1.00" / 25 mm - -
3rd: 0.50" / 13 mm - -
4th: 0.30" / 8 mm - -
- Conning tower: 0.79" / 20 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 34,878 shp / 26,019 Kw = 32.18 kts
Range 4,200nm at 15.00 kts
Bunker at max displacement = 411 tons
Complement:
122 - 159
Cost:
£0.300 million / $1.199 million
Distribution of weights at normal displacement:
Armament: 24 tons, 1.5 %
Armour: 17 tons, 1.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 1.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.1 %
Machinery: 851 tons, 55.4 %
Hull, fittings & equipment: 338 tons, 22.0 %
Fuel, ammunition & stores: 282 tons, 18.4 %
Miscellaneous weights: 25 tons, 1.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
305 lbs / 139 Kg = 8.7 x 4.1 " / 105 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.44
Metacentric height 1.5 ft / 0.5 m
Roll period: 10.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.21
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.460
Length to Beam Ratio: 10.83 : 1
'Natural speed' for length: 18.03 kts
Power going to wave formation at top speed: 68 %
Trim (Max stability = 0, Max steadiness = 100): 69
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: 22.00 ft / 6.71 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (40 %): 18.00 ft / 5.49 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: 13.52 ft / 4.12 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 192.7 %
- Above water (accommodation/working, high = better): 78.9 %
Waterplane Area: 6,271 Square feet or 583 Square metres
Displacement factor (Displacement / loading): 54 %
Structure weight / hull surface area: 26 lbs/sq ft or 126 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.44
- Longitudinal: 1.61
- Overall: 0.50
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform