Kolejna
porcja projektów dla Japonii:-) Tym razem: nieco ulepszona kanonierka
parowo-żaglowa z nowocześniejszą artylerią gwintowaną, szybkie
bocznokołowe awizo oraz pancernik kazamatowy, oparty w dużej mierze na
konstrukcji poprzedniego typu, ale uzbrojony w artylerię gwintowaną i
tradycyjnie wyposażony w pełne ożaglowanie.
Ukushima, japanese gunboat laid down 1867
Displacement:
799 t light; 843 t standard; 946 t normal; 1 028 t full load
Dimensions: Length overall / water x beam x draught
155,60 ft / 149,90 ft x 33,73 ft x 12,57 ft (normal load)
47,43 m / 45,69 m x 10,28 m x 3,83 m
Armament:
4 - 7,01" / 178 mm guns in single mounts, 112,71lbs / 51,12kg shells, 1867 Model
Muzzle loading guns in broadside mounts
on side, evenly spread
Aft Main mounts separated by engine room
Weight of broadside 451 lbs / 204 kg
Shells per gun, main battery: 100
Armour:
- Conning tower: 1,46" / 37 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 1 259 ihp / 939 Kw = 13,00 kts
Range 2 600nm at 7,00 kts
Bunker at max displacement = 185 tons (100% coal)
Complement:
162
Cost:
£0,114 million / $0,454 million
Distribution of weights at normal displacement:
Armament: 56 tons, 6,0%
Armour: 3 tons, 0,3%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 0 tons, 0,0%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 3 tons, 0,3%
Machinery: 273 tons, 28,9%
Hull, fittings & equipment: 386 tons, 40,8%
Fuel, ammunition & stores: 146 tons, 15,5%
Miscellaneous weights: 81 tons, 8,6%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
320 lbs / 145 Kg = 2,8 x 7,0 " / 178 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,33
Metacentric height 1,6 ft / 0,5 m
Roll period: 11,1 seconds
Steadiness - As gun platform (Average = 50 %): 81 %
- Recoil effect (Restricted arc if above 1.00): 0,33
Seaboat quality (Average = 1.00): 1,61
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,521
Length to Beam Ratio: 4,44 : 1
'Natural speed' for length: 12,24 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 26,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 11,68 ft / 3,56 m
- Forecastle (20%): 9,32 ft / 2,84 m
- Mid (50%): 9,32 ft / 2,84 m
- Quarterdeck (15%): 9,32 ft / 2,84 m
- Stern: 9,78 ft / 2,98 m
- Average freeboard: 9,54 ft / 2,91 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 146,8%
- Above water (accommodation/working, high = better): 70,0%
Waterplane Area: 3 314 Square feet or 308 Square metres
Displacement factor (Displacement / loading): 79%
Structure weight / hull surface area: 72 lbs/sq ft or 351 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,85
- Longitudinal: 4,65
- Overall: 1,00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Okręty w typie:
Ukushima (1867)
Takarajima (1867)
Inazuma, japanese aviso laid down 1867
Displacement:
936 t light; 960 t standard; 1 078 t normal; 1 172 t full load
Dimensions: Length overall / water x beam x draught
209,55 ft / 209,55 ft x 27,36 ft x 12,04 ft (normal load)
63,87 m / 63,87 m x 8,34 m x 3,67 m
Armament:
2 - 3,74" / 95,0 mm guns in single mounts, 17,13lbs / 7,77kg shells, 1867 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
Weight of broadside 34 lbs / 16 kg
Shells per gun, main battery: 140
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 paddle wheels, 2 292 ihp / 1 710 Kw = 15,50 kts
Range 2 300nm at 7,50 kts
Bunker at max displacement = 212 tons (100% coal)
Complement:
93 - 122
Cost:
£0,112 million / $0,448 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0,4%
Machinery: 540 tons, 50,1%
Hull, fittings & equipment: 392 tons, 36,3%
Fuel, ammunition & stores: 142 tons, 13,2%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
319 lbs / 145 Kg = 18,6 x 3,7 " / 95 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,58
Metacentric height 1,5 ft / 0,5 m
Roll period: 9,3 seconds
Steadiness - As gun platform (Average = 50 %): 87 %
- Recoil effect (Restricted arc if above 1.00): 0,04
Seaboat quality (Average = 1.00): 1,74
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,547
Length to Beam Ratio: 7,66 : 1
'Natural speed' for length: 14,48 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 11,91 ft / 3,63 m
- Forecastle (20%): 9,06 ft / 2,76 m
- Mid (50%): 9,06 ft / 2,76 m
- Quarterdeck (15%): 9,06 ft / 2,76 m
- Stern: 9,88 ft / 3,01 m
- Average freeboard: 9,34 ft / 2,85 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 164,9%
- Above water (accommodation/working, high = better): 74,0%
Waterplane Area: 3 988 Square feet or 371 Square metres
Displacement factor (Displacement / loading): 87%
Structure weight / hull surface area: 57 lbs/sq ft or 278 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,92
- Longitudinal: 2,20
- Overall: 1,00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Okręty w typie:
Inazuma (1867)
Yunagi (1868)
Nagato, japanese battleship laid down 1867 (Engine 1868)
Displacement:
5 385 t light; 5 667 t standard; 6 181 t normal; 6 593 t full load
Dimensions: Length overall / water x beam x draught
280,77 ft / 280,77 ft x 56,04 ft x 23,43 ft (normal load)
85,58 m / 85,58 m x 17,08 m x 7,14 m
Armament:
4 - 9,02" / 229 mm guns in single mounts, 240,00lbs / 108,86kg shells, 1867 Model
Breech loading guns in casemate mounts
on side, all amidships
4 guns in hull casemates - Limited use in all but light seas
2 - 7,01" / 178 mm guns in single mounts, 112,71lbs / 51,12kg shells, 1867 Model
Muzzle loading guns in casemate mounts
on side, all amidships
2 guns in hull casemates - Limited use in all but light seas
4 - 7,01" / 178 mm guns in single mounts, 112,71lbs / 51,12kg shells, 1867 Model
Muzzle loading guns in casemate mounts
on side, all amidships
1 - 7,01" / 178 mm guns in single mounts, 112,71lbs / 51,12kg shells, 1867 Model
Muzzle loading gun in casemate mount
on bow with limited arc
1 gun in hull casemate - Limited use in all but light seas
2 - 3,74" / 95,0 mm guns in single mounts, 17,13lbs / 7,77kg shells, 1867 Model
Breech loading guns in deck mounts
on centreline, all forward
Weight of broadside 1 783 lbs / 809 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 7,52" / 191 mm 225,66 ft / 68,78 m 10,43 ft / 3,18 m
Ends: 4,02" / 102 mm 55,12 ft / 16,80 m 10,43 ft / 3,18 m
Main Belt covers 124% of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8,19" / 208 mm - -
2nd: 8,19" / 208 mm - -
3rd: 5,98" / 152 mm - -
4th: 2,99" / 76 mm - -
- Armour deck: 1,18" / 30 mm, Conning tower: 4,72" / 120 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 4 298 ihp / 3 207 Kw = 14,00 kts
Range 3 200nm at 8,00 kts
Bunker at max displacement = 925 tons (100% coal)
Complement:
663
Cost:
£0,530 million / $2,119 million
Distribution of weights at normal displacement:
Armament: 223 tons, 3,6%
Armour: 1 481 tons, 24,0%
- Belts: 834 tons, 13,5%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 370 tons, 6,0%
- Armour Deck: 242 tons, 3,9%
- Conning Tower: 34 tons, 0,6%
Machinery: 1 101 tons, 17,8%
Hull, fittings & equipment: 2 038 tons, 33,0%
Fuel, ammunition & stores: 796 tons, 12,9%
Miscellaneous weights: 542 tons, 8,8%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4 205 lbs / 1 907 Kg = 17,5 x 9,0 " / 229 mm shells or 0,7 torpedoes
Stability (Unstable if below 1.00): 1,31
Metacentric height 3,4 ft / 1,0 m
Roll period: 12,7 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0,22
Seaboat quality (Average = 1.00): 2,00
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,587
Length to Beam Ratio: 5,01 : 1
'Natural speed' for length: 16,76 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -9,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16,47 ft / 5,02 m
- Forecastle (20%): 14,37 ft / 4,38 m
- Mid (50%): 14,37 ft / 4,38 m
- Quarterdeck (15%): 14,37 ft / 4,38 m
- Stern: 15,03 ft / 4,58 m
- Average freeboard: 14,59 ft / 4,45 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95,6%
- Above water (accommodation/working, high = better): 87,3%
Waterplane Area: 11 096 Square feet or 1 031 Square metres
Displacement factor (Displacement / loading): 103%
Structure weight / hull surface area: 115 lbs/sq ft or 561 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,88
- Longitudinal: 3,13
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
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