The Royal Yugoslav Navy has contracted to have two vessels of this class built in Greek shipyards.
Project 1940E – Serbia class, Yugoslav Flotilla Cruiser laid down 1939
Displacement: 4,549 t light; 4,778 t standard; 5,117 t normal; 5,388 t full load
Dimensions: Length overall / water x beam x draught
492.77 ft / 475.72 ft x 44.39 ft x 18.04 ft (normal load)
150.20 m / 145.00 m x 13.53 m x 5.50 m
Armament:
8 - 5.31" / 135 mm guns (4x2 guns), 75.07lbs / 34.05kg shells, 1940 Model Dual purpose guns in deck mounts with hoists on centreline ends, evenly spread, 2 raised mounts – superfiring (Romanian origin)
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.88kg shells, 1936 Model Anti-aircraft guns in deck mounts on centreline, all amidships, all raised mounts – superfiring (Bofors)
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts (Oerlikons)
Weight of broadside 618 lbs / 280 kg
Shells per gun, main battery: 360
8 - 21.7" / 550 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.97" / 50 mm 390.42 ft / 119.00 m 10.17 ft / 3.10 m
Ends: Unarmoured
Main Belt covers 126 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.79" / 20 mm 0.39" / 10 mm -
3rd: 0.59" / 15 mm - -
- Armour deck: 0.79" / 20 mm, Conning tower: 1.97" / 50 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 65,925 shp / 49,180 Kw = 34.00 kts
Range 4,400nm at 15.00 kts
Bunker at max displacement = 610 tons
Complement: 302 - 393
Cost: £2.825 million / $11.302 million
Distribution of weights at normal displacement:
Armament: 77 tons, 1.5 %
Armour: 568 tons, 11.1 %
- Belts: 313 tons, 6.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 36 tons, 0.7 %
- Armour Deck: 207 tons, 4.1 %
- Conning Tower: 13 tons, 0.2 %
Machinery: 1,763 tons, 34.4 %
Hull, fittings & equipment: 2,081 tons, 40.7 %
Fuel, ammunition & stores: 568 tons, 11.1 %
Miscellaneous weights: 60 tons, 1.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 4,063 lbs/1,843 Kg = 54.1 x 5.3 "/135 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 2.0 ft / 0.6 m
Roll period: 13.2 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.04
Hull form characteristics:
Hull has rise forward of midbreak and transom stern
Block coefficient: 0.470
Length to Beam Ratio: 10.72 : 1
'Natural speed' for length: 24.85 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 52
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: 29.53 ft / 9.00 m
- Forecastle (22 %): 21.33 ft / 6.50 m
- Mid (50 %): 21.33 ft / 6.50 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 17.95 ft / 5.47 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 126.2 %
- Above water (accommodation/working, high = better): 108.8 %
Waterplane Area: 14,236 Square feet or 1,323 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 78 lbs/sq ft or 383 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 2.26
- Overall: 1.01
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate