C.d.
propozycji dla MW Japonii. Ponieważ pancerniki i krążowniki to nie
wszystko i do całej masy różnych innych zadań potrzeba różnych
"drobnoustrojów" - proponuję dziś dwa kolejne typy okrętów:
parowo-żaglową kanonierkę i monitor do obrony portów.
Awashima, japanese gunboat laid down 1865
Displacement:
743 t light; 777 t standard; 885 t normal; 972 t full load
Dimensions: Length overall / water x beam x draught
147,34 ft / 141,96 ft x 33,56 ft x 12,43 ft (normal load)
44,91 m / 43,27 m x 10,23 m x 3,79 m
Armament:
1 - 300pdr guns in single mounts, 1865 Model
Smoothbore gun in deck mount
on centreline amidships
4 - 32pdr guns in single mounts, 1865 Model
Smoothbore guns in broadside mounts
on side, all aft
Weight of broadside 364 lbs / 165 kg
Shells per gun, main battery: 120
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 1 152 ihp / 860 Kw = 12,70 kts
Range 2 600nm at 7,00 kts
Bunker at max displacement = 194 tons (100% coal)
Complement:
155
Cost:
£0,093 million / $0,370 million
Distribution of weights at normal displacement:
Armament: 29 tons, 3,3%
Machinery: 301 tons, 34,1%
Hull, fittings & equipment: 336 tons, 38,0%
Fuel, ammunition & stores: 143 tons, 16,1%
Miscellaneous weights: 76 tons, 8,6%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
297 lbs / 135 Kg = 2,3 x 7,5 " / 190 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,37
Metacentric height 1,7 ft / 0,5 m
Roll period: 10,8 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0,17
Seaboat quality (Average = 1.00): 1,61
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,523
Length to Beam Ratio: 4,23 : 1
'Natural speed' for length: 11,91 kts
Power going to wave formation at top speed: 57 %
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: 11,02 ft / 3,36 m
- Forecastle (20%): 8,99 ft / 2,74 m
- Mid (50%): 8,99 ft / 2,74 m
- Quarterdeck (15%): 8,99 ft / 2,74 m
- Stern: 9,48 ft / 2,89 m
- Average freeboard: 9,19 ft / 2,80 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 144,3%
- Above water (accommodation/working, high = better): 67,0%
Waterplane Area: 3 130 Square feet or 291 Square metres
Displacement factor (Displacement / loading): 94%
Structure weight / hull surface area: 67 lbs/sq ft or 327 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,85
- Longitudinal: 4,69
- Overall: 1,01
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:
Awashima (1865)
Iki (1865)
Mishima (1865)
Nakadori (1866)
Osumi, japanese monitor laid down 1866
Displacement:
1 523 t light; 1 604 t standard; 1 709 t normal; 1 794 t full load
Dimensions: Length overall / water x beam x draught
208,56 ft / 208,56 ft x 45,47 ft x 10,99 ft (normal load)
63,57 m / 63,57 m x 13,86 m x 3,35 m
Armament:
2 - 10,98" / 279 mm guns in single mounts, 424,09lbs / 192,37kg shells, 1866 Model
Muzzle loading guns in Coles/Ericsson turrets
on centreline ends, evenly spread
Weight of broadside 848 lbs / 385 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4,72" / 120 mm 181,17 ft / 55,22 m 4,76 ft / 1,45 m
Ends: 2,99" / 76 mm 27,36 ft / 8,34 m 4,76 ft / 1,45 m
Main Belt covers 134% of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5,71" / 145 mm 3,50" / 89 mm -
- Armour deck: 1,46" / 37 mm, Conning tower: 5,51" / 140 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 441 ihp / 329 Kw = 9,00 kts
Range 2 350nm at 6,00 kts
Bunker at max displacement = 190 tons (100% coal)
Complement:
132 - 172
Cost:
£0,159 million / $0,636 million
Distribution of weights at normal displacement:
Armament: 106 tons, 6,2%
Armour: 453 tons, 26,5%
- Belts: 183 tons, 10,7%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 76 tons, 4,5%
- Armour Deck: 178 tons, 10,4%
- Conning Tower: 17 tons, 1,0%
Machinery: 119 tons, 6,9%
Hull, fittings & equipment: 845 tons, 49,4%
Fuel, ammunition & stores: 187 tons, 10,9%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1 304 lbs / 592 Kg = 3,1 x 11,0 " / 279 mm shells or 0,7 torpedoes
Stability (Unstable if below 1.00): 1,52
Metacentric height 3,1 ft / 1,0 m
Roll period: 10,8 seconds
Steadiness - As gun platform (Average = 50 %): 24 %
- Recoil effect (Restricted arc if above 1.00): 0,08
Seaboat quality (Average = 1.00): 0,23
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,574
Length to Beam Ratio: 4,59 : 1
'Natural speed' for length: 14,44 kts
Power going to wave formation at top speed: 28 %
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: 0,00 ft / 0,00 m
- Forecastle (20%): 3,12 ft / 0,95 m
- Mid (50%): 3,12 ft / 0,95 m
- Quarterdeck (15%): 3,12 ft / 0,95 m
- Stern: 0,00 ft / 0,00 m
- Average freeboard: 2,63 ft / 0,80 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 69,4%
- Above water (accommodation/working, high = better): 29,7%
Waterplane Area: 6 593 Square feet or 612 Square metres
Displacement factor (Displacement / loading): 111%
Structure weight / hull surface area: 111 lbs/sq ft or 543 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,00
- Longitudinal: 1,01
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability
Okręty w typie:
Osumi (1866)
Satsunan (1867)
Goto (1867)
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