IRN Uragan, Imperial Russia Coastal Monitor laid down 1870
Displacement:
1,788 t light; 1,866 t standard; 1,929 t normal; 1,980 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(201.00 ft / 201.00 ft) x 46.00 ft x (11.50 / 11.75 ft)
(61.26 m / 61.26 m) x 14.02 m x (3.51 / 3.58 m)
Armament:
2 - 15.00" / 381 mm 9.0 cal guns - 440.00lbs / 199.58kg shells, 80 per gun
Muzzle loading guns in Coles/Ericsson turret mount, 1870 Model
1 x Twin mount on centreline, forward deck aft
Weight of broadside 880 lbs / 399 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.00" / 127 mm 156.00 ft / 47.55 m 6.00 ft / 1.83 m
Ends: Unarmoured
Upper: 5.00" / 127 mm 156.00 ft / 47.55 m 2.00 ft / 0.61 m
Main Belt covers 119 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.0" / 279 mm 7.00" / 178 mm -
- Protected deck - single deck:
For and Aft decks: 1.00" / 25 mm
Forecastle: 1.00" / 25 mm Quarter deck: 1.00" / 25 mm
- Conning towers: Forward 10.00" / 254 mm, Aft 0.00" / 0 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 310 ihp / 232 Kw = 8.00 kts
Range 1,440nm at 6.00 kts
Bunker at max displacement = 114 tons (100% coal)
Complement:
145 - 189
Cost:
£0.119 million / $0.477 million
Distribution of weights at normal displacement:
Armament: 81 tons, 4.2 %
- Guns: 81 tons, 4.2 %
Armour: 679 tons, 35.2 %
- Belts: 278 tons, 14.4 %
- Armament: 237 tons, 12.3 %
- Armour Deck: 130 tons, 6.8 %
- Conning Tower: 33 tons, 1.7 %
Machinery: 76 tons, 3.9 %
Hull, fittings & equipment: 952 tons, 49.4 %
Fuel, ammunition & stores: 141 tons, 7.3 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,198 lbs / 1,450 Kg = 2.7 x 15.0 " / 381 mm shells or 2.4 torpedoes
Stability (Unstable if below 1.00): 1.28
Metacentric height 2.4 ft / 0.7 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.21
Seaboat quality (Average = 1.00): 1.00
Hull form characteristics:
Hull has raised forecastle,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.635 / 0.638
Length to Beam Ratio: 4.37 : 1
'Natural speed' for length: 14.18 kts
Power going to wave formation at top speed: 26 %
Trim (Max stability = 0, Max steadiness = 100): 70
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 %, 6.00 ft / 1.83 m, 6.00 ft / 1.83 m
- Forward deck: 30.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Aft deck: 30.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Quarter deck: 20.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Average freeboard: 5.20 ft / 1.58 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 36.2 %
- Above water (accommodation/working, high = better): 45.9 %
Waterplane Area: 6,986 Square feet or 649 Square metres
Displacement factor (Displacement / loading): 152 %
Structure weight / hull surface area: 116 lbs/sq ft or 567 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.92
- Overall: 1.01
Excellent machinery, storage, compartmentation space
Extremely poor accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
15" guns are Russian copies of 15" Dahlgren smoothbores.
IRN Charodeika, Imperial Russia Coastal Monitor laid down 1870
Displacement:
1,591 t light; 1,692 t standard; 1,751 t normal; 1,798 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(201.00 ft / 201.00 ft) x 42.00 ft x (12.00 / 12.27 ft)
(61.26 m / 61.26 m) x 12.80 m x (3.66 / 3.74 m)
Armament:
4 - 9.00" / 229 mm 22.0 cal guns - 300.00lbs / 136.08kg shells, 100 per gun
Muzzle loading guns in Coles/Ericsson turret mounts, 1870 Model
1 x Twin mount on centreline, forward deck aft
1 x Twin mount on centreline, aft deck forward
Weight of broadside 1,200 lbs / 544 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 120.60 ft / 36.76 m 6.00 ft / 1.83 m
Ends: 3.50" / 89 mm 80.38 ft / 24.50 m 6.00 ft / 1.83 m
Upper: 4.50" / 114 mm 120.60 ft / 36.76 m 2.00 ft / 0.61 m
Main Belt covers 92 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.50" / 140 mm 5.50" / 140 mm -
- Protected deck - single deck:
For and Aft decks: 1.00" / 25 mm
Forecastle: 0.25" / 6 mm Quarter deck: 0.50" / 13 mm
- Conning towers: Forward 4.50" / 114 mm, Aft 0.00" / 0 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 288 ihp / 214 Kw = 8.00 kts
Range 1,440nm at 6.00 kts
Bunker at max displacement = 106 tons (100% coal)
Complement:
134 - 175
Cost:
£0.116 million / $0.463 million
Distribution of weights at normal displacement:
Armament: 118 tons, 6.8 %
- Guns: 118 tons, 6.8 %
Armour: 501 tons, 28.6 %
- Belts: 267 tons, 15.2 %
- Armament: 120 tons, 6.9 %
- Armour Deck: 100 tons, 5.7 %
- Conning Tower: 14 tons, 0.8 %
Machinery: 70 tons, 4.0 %
Hull, fittings & equipment: 851 tons, 48.6 %
Fuel, ammunition & stores: 160 tons, 9.2 %
Miscellaneous weights: 50 tons, 2.9 %
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,422 lbs / 1,099 Kg = 9.5 x 9.0 " / 229 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 2.0 ft / 0.6 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.40
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has raised forecastle,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.605 / 0.608
Length to Beam Ratio: 4.79 : 1
'Natural speed' for length: 14.18 kts
Power going to wave formation at top speed: 25 %
Trim (Max stability = 0, Max steadiness = 100): 69
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 %, 7.00 ft / 2.13 m, 7.00 ft / 2.13 m
- Forward deck: 30.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Aft deck: 30.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Quarter deck: 20.00 %, 5.00 ft / 1.52 m, 5.00 ft / 1.52 m
- Average freeboard: 5.40 ft / 1.65 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 42.3 %
- Above water (accommodation/working, high = better): 44.1 %
Waterplane Area: 6,203 Square feet or 576 Square metres
Displacement factor (Displacement / loading): 150 %
Structure weight / hull surface area: 116 lbs/sq ft or 566 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.97
- Overall: 1.01
Excellent machinery, storage, compartmentation space
Extremely poor accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Above-deck weight is masts for steadying the ship, they do not produce enough thrust to move the vessel.
IRN Petropavlovsk, Imperial Russia Armored Frigate laid down 1870
Displacement:
5,020 t light; 5,356 t standard; 5,717 t normal; 6,006 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(312.00 ft / 300.00 ft) x 50.00 ft x (23.00 / 23.96 ft)
(95.10 m / 91.44 m) x 15.24 m x (7.01 / 7.30 m)
Armament:
20 - 8.00" / 203 mm 22.0 cal guns - 187.39lbs / 85.00kg shells, 100 per gun
Muzzle loading guns in broadside mounts, 1870 Model
20 x Single mounts on sides, evenly spread
20 hull mounts on upper deck- Limited use in heavy seas
4 - 7.72" / 196 mm 16.0 cal guns - 60.01lbs / 27.22kg shells, 100 per gun
Muzzle loading guns in deck mounts, 1870 Model
4 x Single mounts on side ends, evenly spread
Weight of broadside 3,988 lbs / 1,809 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 180.00 ft / 54.86 m 10.00 ft / 3.05 m
Ends: 3.50" / 89 mm 119.98 ft / 36.57 m 10.00 ft / 3.05 m
Upper: 4.50" / 114 mm 180.00 ft / 54.86 m 13.00 ft / 3.96 m
Main Belt covers 92 % of normal length
- Protected deck - single deck:
For and Aft decks: 1.00" / 25 mm
Forecastle: 0.50" / 13 mm Quarter deck: 1.00" / 25 mm
- Conning towers: Forward 4.50" / 114 mm, Aft 0.00" / 0 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 2,238 ihp / 1,669 Kw = 12.00 kts
Range 2,500nm at 8.00 kts
Bunker at max displacement = 650 tons (100% coal)
Complement:
328 - 427
Cost:
£0.352 million / $1.410 million
Distribution of weights at normal displacement:
Armament: 273 tons, 4.8 %
- Guns: 273 tons, 4.8 %
Armour: 1,208 tons, 21.1 %
- Belts: 990 tons, 17.3 %
- Armour Deck: 187 tons, 3.3 %
- Conning Tower: 31 tons, 0.5 %
Machinery: 548 tons, 9.6 %
Hull, fittings & equipment: 2,411 tons, 42.2 %
Fuel, ammunition & stores: 697 tons, 12.2 %
Miscellaneous weights: 580 tons, 10.1 %
- Above deck: 580 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,480 lbs / 3,846 Kg = 47.3 x 8.0 " / 203 mm shells or 2.3 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 2.2 ft / 0.7 m
Roll period: 14.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.66
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has a flush deck,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.580 / 0.585
Length to Beam Ratio: 6.00 : 1
'Natural speed' for length: 17.32 kts
Power going to wave formation at top speed: 33 %
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 %, 20.00 ft / 6.10 m, 18.00 ft / 5.49 m
- Forward deck: 30.00 %, 18.00 ft / 5.49 m, 18.00 ft / 5.49 m
- Aft deck: 30.00 %, 18.00 ft / 5.49 m, 18.00 ft / 5.49 m
- Quarter deck: 20.00 %, 18.00 ft / 5.49 m, 18.00 ft / 5.49 m
- Average freeboard: 18.16 ft / 5.54 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 51.0 %
- Above water (accommodation/working, high = better): 109.7 %
Waterplane Area: 10,497 Square feet or 975 Square metres
Displacement factor (Displacement / loading): 149 %
Structure weight / hull surface area: 134 lbs/sq ft or 655 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.03
- Longitudinal: 5.06
- Overall: 1.21
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Above-decks miscellaneous weight is for masts and sails allowing a sailing speed in normal conditions of up to 13.5 knots.
IRN Kniaz Pozharsky, Imperial Russia Armored Frigate laid down 1870)
Displacement:
4,603 t light; 4,817 t standard; 5,152 t normal; 5,420 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(282.00 ft / 270.00 ft) x 49.00 ft x (23.50 / 24.51 ft)
(85.95 m / 82.30 m) x 14.94 m x (7.16 / 7.47 m)
Armament:
6 - 9.00" / 229 mm 22.0 cal guns - 300.00lbs / 136.08kg shells, 100 per gun
Muzzle loading guns in casemate mounts, 1870 Model
6 x Single mounts on sides, evenly spread
4 hull mounts in casemates- Limited use in heavy seas
8 - 9.00" / 229 mm 22.0 cal guns - 300.00lbs / 136.08kg shells, 8 per gun
Muzzle loading guns in broadside mounts, 1870 Model
8 x Single mounts on side ends, evenly spread
8 hull mounts on upper deck- Limited use in heavy seas
Weight of broadside 4,200 lbs / 1,905 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 162.00 ft / 49.38 m 10.00 ft / 3.05 m
Ends: 3.50" / 89 mm 107.98 ft / 32.91 m 10.00 ft / 3.05 m
Upper: 4.50" / 114 mm 162.00 ft / 49.38 m 13.00 ft / 3.96 m
Main Belt covers 92 % of normal length
- Protected deck - single deck:
For and Aft decks: 1.00" / 25 mm
Forecastle: 0.50" / 13 mm Quarter deck: 1.00" / 25 mm
- Conning towers: Forward 4.50" / 114 mm, Aft 0.00" / 0 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 1,569 ihp / 1,170 Kw = 11.00 kts
Range 2,500nm at 8.00 kts
Bunker at max displacement = 604 tons (100% coal)
Complement:
303 - 395
Cost:
£0.303 million / $1.212 million
Distribution of weights at normal displacement:
Armament: 246 tons, 4.8 %
- Guns: 246 tons, 4.8 %
Armour: 1,097 tons, 21.3 %
- Belts: 903 tons, 17.5 %
- Armour Deck: 165 tons, 3.2 %
- Conning Tower: 29 tons, 0.6 %
Machinery: 385 tons, 7.5 %
Hull, fittings & equipment: 2,336 tons, 45.3 %
Fuel, ammunition & stores: 549 tons, 10.7 %
Miscellaneous weights: 540 tons, 10.5 %
- Above deck: 540 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,182 lbs / 4,165 Kg = 36.0 x 9.0 " / 229 mm shells or 2.8 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 2.1 ft / 0.6 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.79
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has a flush deck,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.580 / 0.585
Length to Beam Ratio: 5.51 : 1
'Natural speed' for length: 16.43 kts
Power going to wave formation at top speed: 32 %
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 %, 20.00 ft / 6.10 m, 18.00 ft / 5.49 m
- Forward deck: 30.00 %, 18.00 ft / 5.49 m, 18.00 ft / 5.49 m
- Aft deck: 30.00 %, 18.00 ft / 5.49 m, 18.00 ft / 5.49 m
- Quarter deck: 20.00 %, 18.00 ft / 5.49 m, 18.00 ft / 5.49 m
- Average freeboard: 18.16 ft / 5.54 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 42.1 %
- Above water (accommodation/working, high = better): 104.8 %
Waterplane Area: 9,258 Square feet or 860 Square metres
Displacement factor (Displacement / loading): 159 %
Structure weight / hull surface area: 144 lbs/sq ft or 701 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.07
- Longitudinal: 6.97
- Overall: 1.29
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Above-decks miscellaneous weight is for mast and sails allowing a sailing speed in normal conditions of up to 13.5 knots.
IRN Almaz, Russia Screw Clipper laid down 1870
Displacement:
716 t light; 759 t standard; 872 t normal; 962 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(166.48 ft / 164.04 ft) x 29.53 ft x (13.12 / 14.12 ft)
(50.74 m / 50.00 m) x 9.00 m x (4.00 / 4.30 m)
Armament:
1 - 8.00" / 203 mm 22.0 cal gun - 187.39lbs / 85.00kg shells, 90 per gun
Muzzle loading gun in deck mount, 1870 Model
1 x Single mount on centreline aft
8 - 7.72" / 196 mm 16.0 cal guns - 60.00lbs / 27.22kg shells, 60 per gun
Muzzle loading guns in broadside mounts, 1870 Model
8 x Single mounts on side ends, evenly spread
6 hull mounts on upper deck- Limited use in any sea
Weight of broadside 667 lbs / 303 kg
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 932 ihp / 695 Kw = 12.50 kts
Range 2,500nm at 8.00 kts
Bunker at max displacement = 203 tons (100% coal)
Complement:
79 - 104
Cost:
£0.084 million / $0.337 million
Distribution of weights at normal displacement:
Armament: 75 tons, 8.6 %
- Guns: 75 tons, 8.6 %
Machinery: 228 tons, 26.2 %
Hull, fittings & equipment: 304 tons, 34.9 %
Fuel, ammunition & stores: 155 tons, 17.8 %
Miscellaneous weights: 109 tons, 12.5 %
- Above deck: 109 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
552 lbs / 251 Kg = 3.1 x 8.0 " / 203 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.33
Metacentric height 1.3 ft / 0.4 m
Roll period: 10.7 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0.39
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.480 / 0.492
Length to Beam Ratio: 5.56 : 1
'Natural speed' for length: 12.81 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 36
Bow angle (Positive = bow angles forward): 12.00 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 %, 11.48 ft / 3.50 m, 9.84 ft / 3.00 m
- Forward deck: 30.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
- Aft deck: 30.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
- Quarter deck: 20.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
- Average freeboard: 9.97 ft / 3.04 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 114.2 %
- Above water (accommodation/working, high = better): 75.2 %
Waterplane Area: 3,170 Square feet or 294 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 62 lbs/sq ft or 304 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.84
- Longitudinal: 4.94
- Overall: 1.00
Cramped machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Above-water miscellaneous weight is masts and sails allowing a speed of up to 14 knots under normal conditions (12.5% normal displacement).
8" gun is a muzzleloading rifle on a pivot mount aft, 7.72" guns are muzzleloading 60-pounders on broadside mounts.
IRN Admiral Lazarev, Imperial Russia Monitor laid down 1870
Displacement:
2,711 t light; 2,873 t standard; 3,121 t normal; 3,319 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(254.00 ft / 254.00 ft) x 43.00 ft x (16.00 / 16.86 ft)
(77.42 m / 77.42 m) x 13.11 m x (4.88 / 5.14 m)
Armament:
6 - 9.00" / 229 mm 22.0 cal guns - 300.01lbs / 136.08kg shells, 100 per gun
Muzzle loading guns in Coles/Ericsson turret mounts, 1870 Model
2 x Twin mounts on centreline, forward deck aft
1 x Twin mount on centreline, aft deck forward
Weight of broadside 1,800 lbs / 816 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 152.40 ft / 46.45 m 6.00 ft / 1.83 m
Ends: 3.50" / 89 mm 101.58 ft / 30.96 m 6.00 ft / 1.83 m
Upper: 4.50" / 114 mm 152.40 ft / 46.45 m 3.00 ft / 0.91 m
Main Belt covers 92 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.50" / 165 mm 6.50" / 165 mm -
- Protected deck - single deck:
For and Aft decks: 1.50" / 38 mm
Forecastle: 1.50" / 38 mm Quarter deck: 1.50" / 38 mm
- Conning towers: Forward 6.50" / 165 mm, Aft 0.00" / 0 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 1,181 ihp / 881 Kw = 11.00 kts
Range 2,500nm at 8.00 kts
Bunker at max displacement = 446 tons (100% coal)
Complement:
208 - 271
Cost:
£0.211 million / $0.843 million
Distribution of weights at normal displacement:
Armament: 177 tons, 5.7 %
- Guns: 177 tons, 5.7 %
Armour: 826 tons, 26.5 %
- Belts: 358 tons, 11.5 %
- Armament: 213 tons, 6.8 %
- Armour Deck: 225 tons, 7.2 %
- Conning Tower: 30 tons, 1.0 %
Machinery: 290 tons, 9.3 %
Hull, fittings & equipment: 1,261 tons, 40.4 %
Fuel, ammunition & stores: 410 tons, 13.1 %
Miscellaneous weights: 156 tons, 5.0 %
- Above deck: 156 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,953 lbs / 1,339 Kg = 11.6 x 9.0 " / 229 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 1.5 ft / 0.5 m
Roll period: 14.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.67
Seaboat quality (Average = 1.00): 1.04
Hull form characteristics:
Hull has raised forecastle,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.625 / 0.631
Length to Beam Ratio: 5.91 : 1
'Natural speed' for length: 15.94 kts
Power going to wave formation at top speed: 33 %
Trim (Max stability = 0, Max steadiness = 100): 68
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 %, 9.00 ft / 2.74 m, 9.00 ft / 2.74 m
- Forward deck: 30.00 %, 6.50 ft / 1.98 m, 6.00 ft / 1.83 m
- Aft deck: 30.00 %, 6.00 ft / 1.83 m, 6.00 ft / 1.83 m
- Quarter deck: 20.00 %, 6.00 ft / 1.83 m, 6.00 ft / 1.83 m
- Average freeboard: 6.68 ft / 2.03 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 54.7 %
- Above water (accommodation/working, high = better): 45.0 %
Waterplane Area: 8,030 Square feet or 746 Square metres
Displacement factor (Displacement / loading): 137 %
Structure weight / hull surface area: 120 lbs/sq ft or 586 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.77
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Extremely poor accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Above-deck weight is masts and sails sufficient for driving the ship at 8 knots (5% of normal displacement).