The post-Revolution Russian government were easily persuaded of the advantages of diesel engines for merchant ships. marine diesels were reliable, powerful, fuel-efficient, and safe. They also allowed a reduction in crew size.
Russia's first post-revolution effort was suitably unambitious.
Tiny Russian merchant ship, laid down 1922
Displacement:
989 t light; 1,013 t standard; 1,169 t normal; 1,293 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(190.29 ft / 190.29 ft) x 26.74 ft x (11.48 / 12.00 ft)
(58.00 m / 58.00 m) x 8.15 m x (3.50 / 3.66 m)
Machinery:
Diesel Internal combustion motors,
Direct drive, 1 shaft, 573 shp / 428 Kw = 11.00 kts
Range 6,000nm at 9.00 kts
Bunker at max displacement = 135 tons
Complement:
10 - 13
Cost:
£0.110 million / $0.438 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 19 tons, 1.7 %
Hull, fittings & equipment: 271 tons, 23.2 %
Fuel, ammunition & stores: 98 tons, 8.3 %
Miscellaneous weights: 780 tons, 66.8 %
- Hull below water: 680 tons
- Hull above water: 50 tons
- On freeboard deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,095 lbs / 95 Kg = 19.4 x 6 " / 152 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.64
Metacentric height 1.6 ft / 0.5 m
Roll period: 9.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.708
Length to Beam Ratio: 7.12 : 1
'Natural speed' for length: 13.79 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 14.76 ft / 4.50 m, 13.12 ft / 4.00 m
- Forward deck: 30.00 %, 10.83 ft / 3.30 m, 10.83 ft / 3.30 m
- Aft deck: 35.00 %, 10.83 ft / 3.30 m, 10.83 ft / 3.30 m
- Quarter deck: 15.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
- Average freeboard: 11.76 ft / 3.59 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 73.9 %
- Above water (accommodation/working, high = better): 84.4 %
Waterplane Area: 4,051 Square feet or 376 Square metres
Displacement factor (Displacement / loading): 143 %
Structure weight / hull surface area: 35 lbs/sq ft or 172 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 3.97
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily
They got bigger.
Small Russian merchant ship, laid down 1925
Displacement:
2,693 t light; 2,752 t standard; 2,966 t normal; 3,138 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(229.66 ft / 229.66 ft) x 39.37 ft x (16.40 / 17.43 ft)
(70.00 m / 70.00 m) x 12.00 m x (5.00 / 5.25 m)
Machinery:
Diesel Internal combustion motors,
Direct drive, 1 shaft, 1,154 shp / 861 Kw = 11.50 kts
Range 8,000nm at 10.00 kts
Bunker at max displacement = 386 tons
Complement:
20 - 26
Cost:
£0.320 million / $1.280 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 37 tons, 1.3 %
Hull, fittings & equipment: 656 tons, 21.9 %
Fuel, ammunition & stores: 323 tons,9.2 %
Miscellaneous weights: 1,950 tons, 67.6 %
- Hull below water: 1,655 tons
- Hull above water: 150 tons
- On freeboard deck: 200 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,331 lbs / 2,418 Kg = 49.4 x 6 " / 152 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.66
Metacentric height 2.9 ft / 0.9 m
Roll period: 9.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.706
Length to Beam Ratio: 5.83 : 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 40 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 23.95 ft / 7.30 m, 21.98 ft / 6.70 m
- Forward deck: 30.00 %, 14.11 ft / 4.30 m, 14.11 ft / 4.30 m
- Aft deck: 35.00 %, 14.11 ft / 4.30 m, 14.11 ft / 4.30 m
- Quarter deck: 15.00 %, 21.98 ft / 6.70 m, 22.97 ft / 7.00 m
- Average freeboard: 17.09 ft / 5.21 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 70.9 %
- Above water (accommodation/working, high = better): 96.7 %
Waterplane Area: 7,199 Square feet or 669 Square metres
Displacement factor (Displacement / loading): 143 %
Structure weight / hull surface area: 48 lbs/sq ft or 236 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.83
- Longitudinal: 5.28
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily
And bigger...
Small Russian merchant ship, laid down 1926
Displacement:
3,797 t light; 3,881 t standard; 4,202 t normal; 4,460 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(292.51 ft / 278.87 ft) x 45.93 ft x (16.40 / 17.28 ft)
(89.16 m / 85.00 m) x 14.00 m x (5.00 / 5.27 m)
Machinery:
Diesel Internal combustion motors,
Direct drive, 2 shafts, 1,613 shp / 1,203 Kw = 12.00 kts
Range 10,000nm at 10.00 kts
Bunker at max displacement = 579 tons
Complement:
26 - 34
Cost:
£0.484 million / $1.936 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 52 tons, 1.2 %
Hull, fittings & equipment: 915 tons, 21.8 %
Fuel, ammunition & stores: 406 tons, 9.7 %
Miscellaneous weights: 2,830 tons, 67.3 %
- Hull below water: 2,380 tons
- Hull above water: 200 tons
- On freeboard deck: 250 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7,782 lbs / 3,530 Kg = 72.1 x 6 " / 152 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.83
Metacentric height 4.1 ft / 1.3 m
Roll period: 9.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.706
Length to Beam Ratio: 6.07 : 1
'Natural speed' for length: 16.70 kts
Power going to wave formation at top speed: 36 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 23.62 ft / 7.20 m, 21.65 ft / 6.60 m
- Forward deck: 30.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Aft deck: 35.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Quarter deck: 15.00 %, 21.65 ft / 6.60 m, 21.65 ft / 6.60 m
- Average freeboard: 16.69 ft / 5.09 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 71.4 %
- Above water (accommodation/working, high = better): 103.6 %
Waterplane Area: 10,267 Square feet or 954 Square metres
Displacement factor (Displacement / loading): 143 %
Structure weight / hull surface area: 55 lbs/sq ft or 269 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 2.85
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily
Medium Russian merchant ship, laid down 1928
Displacement:
5,615 t light; 5,739 t standard; 6,215 t normal; 6,596 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(341.72 ft / 328.08 ft) x 52.49 ft x (18.04 / 19.01 ft)
(104.16 m / 100.00 m) x 16.00 m x (5.50 / 5.79 m)
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 2,309 shp / 1,722 Kw = 12.50 kts
Range 12,000nm at 10.00 kts
Bunker at max displacement = 857 tons
Complement:
35 - 46
Cost:
£0.789 million / $3.155 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 72 tons, 1.2 %
Hull, fittings & equipment: 1,323 tons, 21.3 %
Fuel, ammunition & stores: 600 tons, 9.7 %
Miscellaneous weights: 4,220 tons, 67.9 %
- Hull below water: 3,620 tons
- Hull above water: 300 tons
- On freeboard deck: 300 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
11,215 lbs / 5,087 Kg = 103.8 x 6 " / 152 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.97
Metacentric height 5.6 ft / 1.7 m
Roll period: 9.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.705
Length to Beam Ratio: 6.25 : 1
'Natural speed' for length: 18.11 kts
Power going to wave formation at top speed: 34 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 23.62 ft / 7.20 m, 21.65 ft / 6.60 m
- Forward deck: 30.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Aft deck: 35.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Quarter deck: 15.00 %, 21.65 ft / 6.60 m, 21.65 ft / 6.60 m
- Average freeboard: 16.69 ft / 5.09 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 72.9 %
- Above water (accommodation/working, high = better): 103.8 %
Waterplane Area: 13,804 Square feet or 1,282 Square metres
Displacement factor (Displacement / loading): 142 %
Structure weight / hull surface area: 63 lbs/sq ft or 309 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.03
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily
Medium Russian merchant ship, laid down 1929
Displacement:
7,416 t light; 7,578 t standard; 8,136 t normal; 8,583 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(407.34 ft / 393.70 ft) x 52.49 ft x (19.69 / 20.63 ft)
(124.16 m / 120.00 m) x 16.00 m x (6.00 / 6.29 m)
Machinery:
Diesel internal combustion motors,
Direct drive, 2 shafts, 3,025 shp / 2,256 Kw = 13.00 kts
Range 12,000nm at 10.00 kts
Bunker at max displacement = 1,005 tons
Complement:
43 - 56
Cost:
£1.090 million / $4.361 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 93 tons, 1.1 %
Hull, fittings & equipment: 1,713 tons, 21.0 %
Fuel, ammunition & stores: 721 tons, 8.9 %
Miscellaneous weights: 5,610 tons, 68.9 %
- Hull below water: 4,910 tons
- Hull above water: 350 tons
- On freeboard deck: 350 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
13,555 lbs / 6,148 Kg = 125.5 x 6 " / 152 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.90
Metacentric height 5.3 ft / 1.6 m
Roll period: 9.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.705
Length to Beam Ratio: 7.50 : 1
'Natural speed' for length: 19.84 kts
Power going to wave formation at top speed: 30 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 23.62 ft / 7.20 m, 21.65 ft / 6.60 m
- Forward deck: 30.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Aft deck: 35.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Quarter deck: 15.00 %, 21.65 ft / 6.60 m, 21.65 ft / 6.60 m
- Average freeboard: 16.69 ft / 5.09 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74.5 %
- Above water (accommodation/working, high = better): 101.8 %
Waterplane Area: 16,565 Square feet or 1,539 Square metres
Displacement factor (Displacement / loading): 140 %
Structure weight / hull surface area: 67 lbs/sq ft or 327 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.53
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily
Large Russian merchant ship, laid down 1930
Displacement:
8,806 t light; 8,998 t standard; 9,611 t normal; 10,102 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(407.34 ft / 393.70 ft) x 59.06 ft x (20.67 / 21.59 ft)
(124.16 m / 120.00 m) x 18.00 m x (6.30 / 6.58 m)
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 3,360 shp / 2,506 Kw = 13.00 kts
Range 12,000nm at 10.00 kts
Bunker at max displacement = 1,104 tons
Complement:
48 - 63
Cost:
£1.348 million / $5.394 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 102 tons, 1.1 %
Hull, fittings & equipment: 1,974 tons, 20.5 %
Fuel, ammunition & stores: 805 tons, 8.4 %
Miscellaneous weights: 6,730 tons, 70.0 %
- Hull below water: 6,030 tons
- Hull above water: 350 tons
- On freeboard deck: 350 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
16,243 lbs / 7,368 Kg = 150.4 x 6 " / 152 mm shells or 2.1 torpedoes
Stability (Unstable if below 1.00): 2.14
Metacentric height 7.5 ft / 2.3 m
Roll period: 9.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.704
Length to Beam Ratio: 6.67 : 1
'Natural speed' for length: 19.84 kts
Power going to wave formation at top speed: 31 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 23.62 ft / 7.20 m, 21.65 ft / 6.60 m
- Forward deck: 30.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Aft deck: 35.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Quarter deck: 15.00 %, 21.65 ft / 6.60 m, 21.65 ft / 6.60 m
- Average freeboard: 16.69 ft / 5.09 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 76.1 %
- Above water (accommodation/working, high = better): 101.1 %
Waterplane Area: 18,635 Square feet or 1,731 Square metres
Displacement factor (Displacement / loading): 139 %
Structure weight / hull surface area: 71 lbs/sq ft or 349 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.57
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily
Large Russian merchant ship, laid down 1932
Displacement:
11,113 t light; 11,354 t standard; 12,063 t normal; 12,631 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(472.96 ft / 459.32 ft) x 65.62 ft x (20.01 / 20.84 ft)
(144.16 m / 140.00 m) x 20.00 m x (6.10 / 6.35 m)
Machinery:
Diesel Internal combustion motors,
Direct drive, 2 shafts, 4,381 shp / 3,268 Kw = 13.50 kts
Range 12,000nm at 10.00 kts
Bunker at max displacement = 1,277 tons
Complement:
58 - 75
Cost:
£1.850 million / $7.401 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 129 tons, 1.1 %
Hull, fittings & equipment: 2,623 tons, 21.7 %
Fuel, ammunition & stores: 951 tons, 7.9 %
Miscellaneous weights: 8,360 tons, 69.3 %
- Hull below water: 7,360 tons
- Hull above water: 500 tons
- On freeboard deck: 500 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
21,083 lbs / 9,563 Kg = 195.2 x 6 " / 152 mm shells or 2.4 torpedoes
Stability (Unstable if below 1.00): 2.15
Metacentric height 8.8 ft / 2.7 m
Roll period: 9.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.704
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 21.43 kts
Power going to wave formation at top speed: 28 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 23.62 ft / 7.20 m, 21.65 ft / 6.60 m
- Forward deck: 30.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Aft deck: 35.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Quarter deck: 15.00 %, 21.65 ft / 6.60 m, 21.65 ft / 6.60 m
- Average freeboard: 16.69 ft / 5.09 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74.9 %
- Above water (accommodation/working, high = better): 110.3 %
Waterplane Area: 24,157 Square feet or 2,244 Square metres
Displacement factor (Displacement / loading): 140 %
Structure weight / hull surface area: 77 lbs/sq ft or 376 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.18
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily
Really Large Russian merchant ship, laid down 1935
Displacement:
18,068 t light; 18,457 t standard; 19,415 t normal; 20,182 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(572.33 ft / 557.74 ft) x 80.38 ft x (21.65 / 22.40 ft)
(174.45 m / 170.00 m) x 24.50 m x (6.60 / 6.83 m)
Machinery:
Diesel Internal combustion motors,
Direct drive, 3 shafts, 7,447 shp / 5,556 Kw = 14.50 kts
Range 12,000nm at 10.00 kts
Bunker at max displacement = 1,726 tons
Complement:
82 - 107
Cost:
£3.370 million / $13.481 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 212 tons, 1.1 %
Hull, fittings & equipment: 4,657 tons, 24.0 %
Fuel, ammunition & stores: 1,347 tons, 6.9 %
Miscellaneous weights: 13,200 tons, 68.0 %
- Hull below water: 12,000 tons
- Hull above water: 600 tons
- On freeboard deck: 600 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
34,487 lbs / 15,643 Kg = 319.3 x 6 " / 152 mm shells or 3.1 torpedoes
Stability (Unstable if below 1.00): 2.35
Metacentric height 13.4 ft / 4.1 m
Roll period: 9.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.78
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck ,
an extended bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.700 / 0.703
Length to Beam Ratio: 6.94 : 1
'Natural speed' for length: 23.62 kts
Power going to wave formation at top speed: 27 %
Trim (Max stability = 0, Max steadiness = 100): 39
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 25.26 ft / 7.70 m, 21.65 ft / 6.60 m
- Forward deck: 30.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Aft deck: 35.00 %, 13.78 ft / 4.20 m, 13.78 ft / 4.20 m
- Quarter deck: 15.00 %, 21.65 ft / 6.60 m, 21.65 ft / 6.60 m
- Average freeboard: 16.82 ft / 5.13 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74.6 %
- Above water (accommodation/working, high = better): 114.7 %
Waterplane Area: 35,933 Square feet or 3,338 Square metres
Displacement factor (Displacement / loading): 143 %
Structure weight / hull surface area: 98 lbs/sq ft or 478 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.10
- Longitudinal: 0.97
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily