Tym razem prezentuje trzy projekty, jakie "wysmażyłem" w ostatnim czasie;-)
Pierwszy
z nich to nowoczesny krążownik dla floty japońskiej (zresztą pierwsza
taka jednostka w tej flocie), zbudowany w całości z żelaza, dość szybki,
lecz jeszcze nieopancerzony. Wzorowany na brytyjskich okrętach typu
Iris, od których jest nieco mniejszy, i słabiej uzbrojony, ale za to
nieco szybszy. Zwiększony w porównaniu z poprzednimi projektami zasięg
pozwolił na praktyczne uniezależnienie się od siły wiatru, stąd
przewiduję jedynie szczątkowe ożaglowanie okrętu. Na początku lat XIX w.
była by to niezwykle wartościowa jednostka we flocie, przydatna
zwłaszcza do celów rozpoznawczych.
Druga
jednostka to krążownik, czy jak kto woli - kanonierka torpedowa. Z
racji rozmiarów bardziej właściwe było by chyba to drugie określenie.
Takie okręty budowały liczne floty w XIX w. w ramach poszukiwań okrętów
torpedowych o lepszych własnościach morskich niż klasyczne torpedowce.
Na ogól okręty te nie spełniały pokładanych w nich nadziei, bowiem były
zbyt wolne do stawianych im zadań. Na tel innych, ten projekt nie jest
najgorszy, choć prędkość nie powala na kolana - nawet jak na lata 80-te
XIX w. niespełna 20 w. to ciut za mało..
Natomiast
ostatni okręt to mała, nieopancerzona korweta z pełnym ożaglowaniem -
idealna jako tania i "masowa" jednostka patrolowa i do innych
drugorzędnych zadań.
Sakawa, japanese cruiser laid down 1878 (Engine 1880)
Displacement:
2 389 t light; 2 494 t standard; 2 969 t normal; 3 349 t full load
Dimensions: Length overall / water x beam x draught
298,24 ft / 291,21 ft x 38,29 ft x 16,04 ft (normal load)
90,90 m / 88,76 m x 11,67 m x 4,89 m
Armament:
2 - 4,72" / 120 mm guns in single mounts, 43,23lbs / 19,61kg shells, 1878 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread
6 - 4,72" / 120 mm guns in single mounts, 43,23lbs / 19,61kg shells, 1878 Model
Breech loading guns in deck mounts with hoists
on side, all amidships
8 - 1,85" / 47,0 mm guns in single mounts, 2,60lbs / 1,18kg shells, 1878 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 367 lbs / 166 kg
Shells per gun, main battery: 190
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,79" / 20 mm - -
2nd: 0,79" / 20 mm - -
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 6 201 ihp / 4 626 Kw = 18,00 kts
Range 4 350nm at 10,00 kts
Bunker at max displacement = 855 tons (100% coal)
Complement:
261
Cost:
£0,300 million / $1,201 million
Distribution of weights at normal displacement:
Armament: 46 tons, 1,5%
Armour: 17 tons, 0,6%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 17 tons, 0,6%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 1 273 tons, 42,9%
Hull, fittings & equipment: 982 tons, 33,1%
Fuel, ammunition & stores: 580 tons, 19,5%
Miscellaneous weights: 72 tons, 2,4%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1 189 lbs / 539 Kg = 27,5 x 4,7 " / 120 mm shells or 0,4 torpedoes
Stability (Unstable if below 1.00): 1,49
Metacentric height 2,3 ft / 0,7 m
Roll period: 10,5 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0,28
Seaboat quality (Average = 1.00): 1,60
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,581
Length to Beam Ratio: 7,61 : 1
'Natural speed' for length: 17,06 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 14,00 degrees
Stern overhang: 3,22 ft / 0,98 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15,32 ft / 4,67 m
- Forecastle (20%): 11,94 ft / 3,64 m
- Mid (50%): 11,94 ft / 3,64 m
- Quarterdeck (15%): 11,94 ft / 3,64 m
- Stern: 13,02 ft / 3,97 m
- Average freeboard: 12,29 ft / 3,75 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 153,7%
- Above water (accommodation/working, high = better): 88,8%
Waterplane Area: 7 811 Square feet or 726 Square metres
Displacement factor (Displacement / loading): 98%
Structure weight / hull surface area: 75 lbs/sq ft or 365 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,92
- Longitudinal: 1,96
- 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;
Sakawa (1880)
Noshiro (1881)
Ryuho, japanese torpedo cruiser laid down 1879 (Engine 1880)
Displacement:
893 t light; 922 t standard; 1 184 t normal; 1 393 t full load
Dimensions: Length overall / water x beam x draught
232,94 ft / 232,15 ft x 31,04 ft x 11,55 ft (normal load)
71,00 m / 70,76 m x 9,46 m x 3,52 m
Armament:
2 - 2,99" / 76,0 mm guns in single mounts, 11,18lbs / 5,07kg shells, 1879 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
4 - 1,85" / 47,0 mm guns in single mounts, 2,65lbs / 1,20kg shells, 1879 Model
Breech loading guns in deck mounts
on side, all amidships
Weight of broadside 33 lbs / 15 kg
Shells per gun, main battery: 250
6 - 14,0" / 356 mm above water torpedoes
Armour:
- Conning tower: 1,77" / 45 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 5 130 ihp / 3 827 Kw = 19,50 kts
Range 4 210nm at 10,00 kts
Bunker at max displacement = 471 tons (100% coal)
Complement:
100 - 131
Cost:
£0,129 million / $0,514 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0,3%
Armour: 4 tons, 0,4%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 0 tons, 0,0%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 4 tons, 0,4%
Machinery: 671 tons, 56,6%
Hull, fittings & equipment: 214 tons, 18,1%
Fuel, ammunition & stores: 291 tons, 24,6%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
223 lbs / 101 Kg = 20,0 x 3,0 " / 76 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 2,04
Metacentric height 2,7 ft / 0,8 m
Roll period: 8,0 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0,02
Seaboat quality (Average = 1.00): 1,52
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,498
Length to Beam Ratio: 7,48 : 1
'Natural speed' for length: 15,24 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -9,00 degrees
Stern overhang: 0,79 ft / 0,24 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 12,24 ft / 3,73 m
- Forecastle (20%): 10,66 ft / 3,25 m
- Mid (50%): 10,66 ft / 3,25 m
- Quarterdeck (15%): 10,66 ft / 3,25 m
- Stern: 10,66 ft / 3,25 m
- Average freeboard: 10,79 ft / 3,29 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 185,7%
- Above water (accommodation/working, high = better): 69,6%
Waterplane Area: 4 605 Square feet or 428 Square metres
Displacement factor (Displacement / loading): 55%
Structure weight / hull surface area: 27 lbs/sq ft or 130 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,45
- Longitudinal: 1,17
- Overall: 0,50
Caution: Hull subject to strain in open-sea
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:
Ryuho (1880)
Hosho (1880)
Shirane (1880)
Kusu, japanese sloop laid down 1880 (Engine 1881)
Displacement:
926 t light; 1 006 t standard; 1 176 t normal; 1 312 t full load
Dimensions: Length overall / water x beam x draught
212,95 ft / 205,94 ft x 32,32 ft x 12,86 ft (normal load)
64,91 m / 62,77 m x 9,85 m x 3,92 m
Armament:
10 - 4,72" / 120 mm guns in single mounts, 44,82lbs / 20,33kg shells, 1880 Model
Breech loading guns in broadside mounts
on side, evenly spread
10 guns on gundeck (upper belt level) - Limited use in any sea
4 - 1,85" / 47,0 mm guns in single mounts, 2,69lbs / 1,22kg shells, 1880 Model
Breech loading guns in deck mounts
on side ends, evenly spread
Weight of broadside 459 lbs / 208 kg
Shells per gun, main battery: 220
2 - 0,0" / 0 mm above water torpedoes, 356 - 0,0" / 0 mm submerged torpedo tubes
Armour:
- Conning tower: 1,57" / 40 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 1 656 ihp / 1 236 Kw = 14,50 kts
Range 3 600nm at 9,00 kts
Bunker at max displacement = 306 tons (100% coal)
Complement:
192
Cost:
£0,126 million / $0,504 million
Distribution of weights at normal displacement:
Armament: 57 tons, 4,9%
Armour: 4 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: 4 tons, 0,3%
Machinery: 325 tons, 27,6%
Hull, fittings & equipment: 441 tons, 37,5%
Fuel, ammunition & stores: 250 tons, 21,3%
Miscellaneous weights: 99 tons, 8,4%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
681 lbs / 309 Kg = 15,2 x 4,7 " / 120 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,33
Metacentric height 1,5 ft / 0,5 m
Roll period: 11,0 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0,37
Seaboat quality (Average = 1.00): 2,00
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,481
Length to Beam Ratio: 6,37 : 1
'Natural speed' for length: 14,35 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 2,33 ft / 0,71 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 12,86 ft / 3,92 m
- Forecastle (20%): 11,35 ft / 3,46 m
- Mid (50%): 11,35 ft / 3,46 m
- Quarterdeck (15%): 11,35 ft / 3,46 m
- Stern: 11,35 ft / 3,46 m
- Average freeboard: 11,47 ft / 3,50 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 137,6%
- Above water (accommodation/working, high = better): 91,2%
Waterplane Area: 4 176 Square feet or 388 Square metres
Displacement factor (Displacement / loading): 95%
Structure weight / hull surface area: 58 lbs/sq ft or 285 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,87
- Longitudinal: 3,64
- Overall: 1,00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Okręty w typie:
Kusu (1881)
Nara (1881)
Sakura (1881)
Kako (1882)
Naka (1882)
Tatsuta (1883)
Yuru (1883)
Fuyo (1883)
Abukuma (1884)
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