The Mostar class light destroyers will also be refitted to give them a viable electronics suite; it is, however, less elaborate.
Mostar, Yugoslav Light Destroyer laid down 1941 – Refitted 1945
Displacement: 1,075 t light; 1,119 t standard; 1,215 t normal; 1,291 t full load
Dimensions: Length overall / water x beam x draught
356.99 ft / 344.49 ft x 31.50 ft x 9.35 ft (normal load) [108.81 m / 105.00 m x 9.60 m x 2.85 m]
Armament:
4 - 4.13" / 105 mm guns (2x2 guns), 35.32lbs / 16.02kg shells, 1941 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.88kg shells, 1941 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1941 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
Weight of broadside 150 lbs / 68 kg
Shells per gun, main battery: 220
6 - 21.7" / 550 mm above water torpedoes
Armour:
Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.59" / 15 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -
Machinery:
Oil fired boilers, steam turbines, Geared drive, 2 shafts, 26,536 shp / 19,796 Kw = 33.00 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 172 tons
Complement: 102 - 133
Cost: £0.824 million / $3.296 million
Distribution of weights at normal displacement:
Armament: 19 tons, 1.5 %
Armour: 7 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 7 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 571 tons, 47.0 %
Hull, fittings & equipment: 444 tons, 36.6 %
Fuel, ammunition & stores: 139 tons, 11.5 %
Miscellaneous weights: 35 tons, 2.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 460 lbs / 208 Kg = 13.0 x 4.1 " / 105 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 1.2 ft / 0.4 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.37
Seaboat quality (Average = 1.00): 1.10
Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak and transom stern
Block coefficient: 0.419
Length to Beam Ratio: 10.94: 1
'Natural speed' for length: 21.25 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 64
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.65 ft / 6.60 m
- Forecastle (20 %): 18.37 ft / 5.60 m (17.39 ft / 5.30 m aft of break)
- Mid (50 %): 17.06 ft / 5.20 m (10.50 ft / 3.20 m aft of break)
- Quarterdeck (15 %): 10.50 ft / 3.20 m
- Stern: 10.50 ft / 3.20 m
- Average freeboard: 14.35 ft / 4.38 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 167.4 %
- Above water (accommodation/working, high = better): 106.0 %
Waterplane Area: 7,017 Square feet or 652 Square metres
Displacement factor (Displacement / loading): 76 %
Structure weight / hull surface area: 33 lbs/sq ft or 159 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.53
- Longitudinal: 2.07
- Overall: 0.60
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Refit Plan:
Update Electronics
Add DRBV-9 Surface and Air Search Radar (7.5 tons)
Add DRBN-1 Navigational Surface and Air Search Radar (2.0 tons)
Add DRBC-3B Fire Control Radar (8.0 tons)
Add Diesel Generator Set (2.5 tons)
Add A/S outfit - four K-guns and two depth charge racks (15 tons)
Estimated cost: 54 tons
Estimated time: 16 days