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Thursday, December 10th 2009, 11:38am

CV Strashniy after refit

The main changes are: Reduced number of spare aircraft, addition of radars and combat information center, replacement of old 130mm twin DP mounts with 130mm semiautomatic twin DP mounts, and refurbishment of fittings and systems for service life extension.


Strashniy, Russian Aircraft Carrier laid down 1918 (Engine 1923)

Displacement:
12,924 t light; 13,359 t standard; 14,684 t normal; 15,744 t full load

Dimensions: Length overall / water x beam x draught
720.85 ft / 688.98 ft x 72.18 ft x 22.97 ft (normal load)
219.72 m / 210.00 m x 22.00 m x 7.00 m

Armament:
12 - 5.12" / 130 mm guns (4x3 guns), 79.37lbs / 36.00kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 2 raised mounts - superfiring
24 - 1.46" / 37.0 mm guns (6x4 guns), 1.55lbs / 0.70kg shells, 1938 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, 2 raised mounts
4 - 0.55" / 14.0 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 990 lbs / 449 kg
Shells per gun, main battery: 250

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.97" / 50 mm 405.84 ft / 123.70 m 10.83 ft / 3.30 m
Ends: Unarmoured
Main Belt covers 91 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.20" / 5 mm -
2nd: 0.98" / 25 mm 0.20" / 5 mm -

- Armour deck: 1.97" / 50 mm, Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 77,126 shp / 57,536 Kw = 30.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 2,384 tons

Complement:
666 - 867

Cost:
£1.803 million / $7.213 million

Distribution of weights at normal displacement:
Armament: 105 tons, 0.7 %
Armour: 1,568 tons, 10.7 %
- Belts: 366 tons, 2.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 21 tons, 0.1 %
- Armour Deck: 1,155 tons, 7.9 %
- Conning Tower: 25 tons, 0.2 %
Machinery: 2,578 tons, 17.6 %
Hull, fittings & equipment: 5,008 tons, 34.1 %
Fuel, ammunition & stores: 1,760 tons, 12.0 %
Miscellaneous weights: 3,666 tons, 25.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
18,396 lbs / 8,344 Kg = 274.4 x 5.1 " / 130 mm shells or 2.1 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 3.7 ft / 1.1 m
Roll period: 15.8 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.16
Seaboat quality (Average = 1.00): 1.50

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.450
Length to Beam Ratio: 9.55 : 1
'Natural speed' for length: 26.25 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 13.12 ft / 4.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 32.48 ft / 9.90 m
- Forecastle (20 %): 19.03 ft / 5.80 m
- Mid (50 %): 19.03 ft / 5.80 m
- Quarterdeck (15 %): 19.03 ft / 5.80 m
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 20.28 ft / 6.18 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.6 %
- Above water (accommodation/working, high = better): 172.6 %
Waterplane Area: 31,721 Square feet or 2,947 Square metres
Displacement factor (Displacement / loading): 131 %
Structure weight / hull surface area: 103 lbs/sq ft or 503 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.13
- Overall: 1.00
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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Refitted in 1938

Air Group-56 14 ftr, 14 DB, 14 TB, 14 Scout - 3136 tons

Twin 130mm semiautomatic DP mounts simmed as triples
Air search radar - 10 tons
Surface search radar - 10 tons
Air control radar - 10 tons
Combat Information Center - 200 tons
12 spare aircraft - 300 tons