Besstrashniy class, Russian Cruiser Flotilla Leader laid down 1917
Displacement:
3,668 t light; 3,947 t standard; 4,756 t normal; 5,403 t full load
Dimensions: Length overall / water x beam x draught
554.22 ft / 534.78 ft x 50.20 ft x 14.76 ft (normal load)
168.93
m / 163.00 m x 15.30 m x 4.50 m
Armament:
4 - 5.98" / 152 mm guns (2 mounts), 125.66lbs / 57.00kg shells, 1917 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, 3 raised guns
4 - 5.98" / 152 mm guns in single mounts, 125.66lbs / 57.00kg shells, 1917 Model
Breech loading guns in deck
mounts
on side, evenly spread
12 - 3.94" / 100 mm guns in single mounts,
35.27lbs / 16.00kg shells, 1917 Model
Quick firing guns in casemate mounts
on side, evenly
spread
12 guns in hull casemates - Limited use in all but light seas
8 -
1.77" / 45.0 mm guns in single mounts, 2.78lbs / 1.26kg shells, 1917 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs
/ 0.03kg shells, 1917 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight
of broadside 1,451 lbs / 658 kg
Shells per gun, main battery: 200
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.18"
/ 30 mm 534.78 ft / 163.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 154
% of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95"
/ 75 mm 0.20" / 5 mm -
2nd: 2.95" / 75 mm 0.20" / 5 mm
-
3rd: 1.97" / 50 mm - -
4th: 0.98"
/ 25 mm - -
- Conning tower: 0.98" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 56,381 shp / 42,060 Kw = 32.50
kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,455 tons
Complement:
286 - 372
Cost:
£0.993 million / $3.971 million
Distribution of weights at normal displacement:
Armament: 156 tons, 3.3 %
Armour: 327 tons, 6.9 %
- Belts: 230 tons, 4.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 91 tons,
1.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 6 tons, 0.1 %
Machinery:
2,048 tons, 43.1 %
Hull, fittings & equipment: 1,138 tons, 23.9 %
Fuel, ammunition & stores: 1,087
tons, 22.9 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,472 lbs / 668 Kg = 13.7 x 6.0 " / 152 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.73
Metacentric
height 4.4 ft / 1.3 m
Roll period: 10.1 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
-
Recoil effect (Restricted arc if above 1.00): 0.29
Seaboat quality (Average = 1.00): 1.20
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.420
Length
to Beam Ratio: 10.65 : 1
'Natural speed' for length: 23.13 kts
Power going to wave formation at top speed:
55 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 30.00
degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.31 ft / 6.80 m
- Forecastle (20 %): 19.36 ft / 5.90 m
- Mid (50 %): 19.36 ft / 5.90 m (11.81 ft / 3.60 m aft of break)
- Quarterdeck (15 %): 11.81
ft / 3.60 m
- Stern: 11.81 ft / 3.60 m
- Average freeboard: 15.82
ft / 4.82 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 166.0 %
-
Above water (accommodation/working, high = better): 170.5 %
Waterplane Area: 16,736 Square feet or 1,555 Square metres
Displacement
factor (Displacement / loading): 83 %
Structure weight / hull surface area: 44 lbs/sq ft or 213 Kg/sq metre
Hull
strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 0.63
- Overall:
0.51
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is
cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun
platform
Good seaboat, rides out heavy weather easily