A more modern escort, optimized for ASW.
Project 1949 Beta, Yugoslav Frigate laid down 1949
Displacement: 1,460 t light; 1,560 t standard; 1,739 t normal; 1,882 t full load
Dimensions: Length overall / water x beam x draught
355.53 ft / 344.49 ft x 39.37 ft x 10.83 ft (normal load) [108.37 m / 105.00 m x 12.00 m x 3.30 m]
Armament:
4 - 4.72" / 120 mm guns (2x2 guns), 52.72lbs / 23.91kg shells, 1949 Model Dual purpose guns in deck mounts with hoists on centerline ends, evenly spread
2 - 2.24" / 57.0 mm guns (1x2 guns), 5.65lbs / 2.56kg shells, 1949 Model Anti-aircraft guns in deck mount on centerline aft, all raised guns - superfiring
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1949 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1949 Model Machine guns in deck mounts on side, evenly spread
Weight of broadside 245 lbs / 111 kg
Shells per gun, main battery: 450
6 - 21.7" / 550 mm above water torpedoes
Armor:
Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm 0.39" / 10 mm -
Machinery:
Oil fired boilers, steam turbines, Geared drive, 2 shafts, 17,157 shp / 12,799 Kw = 28.00 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 321 tons
Complement: 134 - 175
Cost: £1.030 million / $4.122 million
Distribution of weights at normal displacement:
Armament: 31 tons, 1.8 %
Armor: 14 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 0.8 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 415 tons, 23.9 %
Hull, fittings & equipment: 901 tons, 51.8 %
Fuel, ammunition & stores: 279 tons, 16.0 %
Miscellaneous weights: 100 tons, 5.8 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 2,916 lbs / 1,323 Kg = 55.3 x 4.7 " / 120 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.5 ft / 0.4 m
Roll period: 13.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.33
Seaboat quality (Average = 1.00): 1.24
Hull form characteristics:
Hull has rise forward of midbreak and transom stern
Block coefficient: 0.415
Length to Beam Ratio: 8.75: 1
'Natural speed' for length: 21.67 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (50 %): 18.04 ft / 5.50 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (25 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 15.47 ft / 4.72 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 100.4 %
- Above water (accommodation/working, high = better): 130.3 %
Waterplane Area: 8,744 Square feet or 812 Square meters
Displacement factor (Displacement / loading): 146 %
Structure weight / hull surface area: 61 lbs/sq ft or 296 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 0.88
- Longitudinal: 3.00
- 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
Good seaboat, rides out heavy weather easily
Breakdown of Miscellaneous Weight
Reserved for air warning radar - 10 tons
Reserved for surface search radar - 10 tons
Reserved for fire control radar - 10 tons
Reserved for AS detection equipment - 20 tons
Reserved for Ahead-Thrown AS Weapon - 20 tons
Reserved for AS outfit including DC and K-guns - 30 tons