czwartek, 30 sierpnia 2012

Trzy projekty dla Japonii - 18.10.2011

Kończąc cykl poświęcony hipotetycznej flocie japońskiej w XIX w. na połowie lat 80-tych, prezentuję trzy ostatnie projekty: krążownik pancerny, krążownik pancernopokładowy (niestety, niezbyt udany bo ani szybki ani dobrze opancerzony..) oraz specyficzny okręt przeznaczony na jednostkę flagową flotylli torpedowców – swoim konceptem zbliżony do niemieckich division boot-ów. 

Sagami, japanese armoured cruiser laid down 1882 (Engine 1884)
Barbette ship

Displacement:
    4 906 t light; 5 116 t standard; 5 805 t normal; 6 356 t full load

Dimensions: Length overall / water x beam x draught
    321,56 ft / 317,88 ft x 47,51 ft x 22,57 ft (normal load)
    98,01 m / 96,89 m x 14,48 m  x 6,88 m

Armament:
      2 - 10,24" / 260 mm guns in single mounts, 471,92lbs / 214,06kg shells, 1882 Model
      Breech loading guns in open barbettes
      on centreline ends, evenly spread
      8 - 5,91" / 150 mm guns in single mounts, 90,62lbs / 41,10kg shells, 1882 Model
      Breech loading guns in casemate mounts
      on side, all amidships
      4 guns in hull casemates - Limited use in all but light seas
      12 - 2,24" / 57,0 mm guns in single mounts, 4,97lbs / 2,25kg shells, 1882 Model
      Quick firing guns in deck mounts
      on side, all amidships
    Weight of broadside 1 728 lbs / 784 kg
    Shells per gun, main battery: 90
    1 - 15,0" / 381 mm above water torpedoes, 2 - 15,0" / 381 mm submerged torpedo tubes

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    10,0" / 254 mm      99,11 ft / 30,21 m    6,76 ft / 2,06 m
    Ends:    Unarmoured
      Main Belt covers 48% of normal length
      Main belt does not fully cover magazines and engineering spaces

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:          -              -            11,0" / 279 mm
    2nd:    7,99" / 203 mm          -                  -

   - Armour deck: 0,98" / 25 mm, Conning tower: 12,01" / 305 mm

Machinery:
    Coal fired boilers, simple reciprocating steam engines,
    Direct drive, 2 shafts, 8 916 ihp / 6 652 Kw = 18,00 kts
    Range 4 810nm at 10,00 kts
    Bunker at max displacement = 1 240 tons (100% coal)

Complement:
    332 - 432

Cost:
    £0,599 million / $2,394 million

Distribution of weights at normal displacement:
    Armament: 216 tons, 3,7%
    Armour: 1 146 tons, 19,7%
       - Belts: 356 tons, 6,1%
       - Torpedo bulkhead: 0 tons, 0,0%
       - Armament: 506 tons, 8,7%
       - Armour Deck: 200 tons, 3,5%
       - Conning Tower: 84 tons, 1,4%
    Machinery: 1 752 tons, 30,2%
    Hull, fittings & equipment: 1 792 tons, 30,9%
    Fuel, ammunition & stores: 899 tons, 15,5%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      3 100 lbs / 1 406 Kg = 6,6 x 10,2 " / 260 mm shells or 0,6 torpedoes
    Stability (Unstable if below 1.00): 1,39
    Metacentric height 2,9 ft / 0,9 m
    Roll period: 11,7 seconds
    Steadiness    - As gun platform (Average = 50 %): 84 %
            - Recoil effect (Restricted arc if above 1.00): 0,43
    Seaboat quality  (Average = 1.00): 1,67

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,596
    Length to Beam Ratio: 6,69 : 1
    'Natural speed' for length: 17,83 kts
    Power going to wave formation at top speed: 51 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): -10,00 degrees
    Stern overhang: 3,67 ft / 1,12 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        17,03 ft / 5,19 m
       - Forecastle (20%):    14,17 ft / 4,32 m
       - Mid (50%):        14,17 ft / 4,32 m
       - Quarterdeck (15%):    14,17 ft / 4,32 m
       - Stern:        14,76 ft / 4,50 m
       - Average freeboard:    14,45 ft / 4,40 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 130,7%
        - Above water (accommodation/working, high = better): 87,4%
    Waterplane Area: 11 004 Square feet or 1 022 Square metres
    Displacement factor (Displacement / loading): 91%
    Structure weight / hull surface area: 97 lbs/sq ft or 473 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,89
        - Longitudinal: 2,77
        - 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:
Sagami (1884)
Mikawa (1884)
Iwaki (1885)
Iwase (1885)


Mogami, japanese protected cruiser laid down 1883 (Engine 1884)

Displacement:
    1 890 t light; 1 969 t standard; 2 259 t normal; 2 490 t full load

Dimensions: Length overall / water x beam x draught
    292,22 ft / 290,39 ft x 39,44 ft x 13,62 ft (normal load)
    89,07 m / 88,51 m x 12,02 m  x 4,15 m

Armament:
      2 - 4,72" / 120 mm guns in single mounts, 47,19lbs / 21,41kg shells, 1883 Model
      Quick firing guns in deck mounts with hoists
      on centreline ends, evenly spread
      4 - 4,72" / 120 mm guns in single mounts, 47,19lbs / 21,41kg shells, 1883 Model
      Quick firing guns in deck mounts with hoists
      on side, all amidships
      4 - 2,24" / 57,0 mm guns in single mounts, 5,06lbs / 2,30kg shells, 1883 Model
      Quick firing guns in deck mounts
      on side, all amidships
    Weight of broadside 303 lbs / 138 kg
    Shells per gun, main battery: 175
    2 - 14,0" / 356 mm above water torpedoes

Armour:
   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    1,57" / 40 mm          -                  -
    2nd:    1,57" / 40 mm          -                  -

   - Armour deck: 0,98" / 25 mm, Conning tower: 2,01" / 51 mm

Machinery:
    Coal fired boilers, simple reciprocating steam engines,
    Direct drive, 2 shafts, 4 441 ihp / 3 313 Kw = 17,50 kts
    Range 4 500nm at 9,00 kts
    Bunker at max displacement = 521 tons (100% coal)

Complement:
    163 - 212

Cost:
    £0,220 million / $0,881 million

Distribution of weights at normal displacement:
    Armament: 38 tons, 1,7%
    Armour: 172 tons, 7,6%
       - Belts: 0 tons, 0,0%
       - Torpedo bulkhead: 0 tons, 0,0%
       - Armament: 25 tons, 1,1%
       - Armour Deck: 140 tons, 6,2%
       - Conning Tower: 7 tons, 0,3%
    Machinery: 873 tons, 38,6%
    Hull, fittings & equipment: 807 tons, 35,7%
    Fuel, ammunition & stores: 369 tons, 16,3%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      1 289 lbs / 585 Kg = 27,3 x 4,7 " / 120 mm shells or 0,4 torpedoes
    Stability (Unstable if below 1.00): 1,55
    Metacentric height 2,6 ft / 0,8 m
    Roll period: 10,3 seconds
    Steadiness    - As gun platform (Average = 50 %): 81 %
            - Recoil effect (Restricted arc if above 1.00): 0,19
    Seaboat quality  (Average = 1.00): 1,62

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,507
    Length to Beam Ratio: 7,36 : 1
    'Natural speed' for length: 17,04 kts
    Power going to wave formation at top speed: 47 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 0,00 degrees
    Stern overhang: 1,84 ft / 0,56 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        13,68 ft / 4,17 m
       - Forecastle (20%):    9,97 ft / 3,04 m
       - Mid (50%):        9,97 ft / 3,04 m
       - Quarterdeck (15%):    9,97 ft / 3,04 m
       - Stern:        10,63 ft / 3,24 m
       - Average freeboard:    10,32 ft / 3,15 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 138,5%
        - Above water (accommodation/working, high = better): 84,7%
    Waterplane Area: 7 679 Square feet or 713 Square metres
    Displacement factor (Displacement / loading): 102%
    Structure weight / hull surface area: 69 lbs/sq ft or 337 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,95
        - Longitudinal: 1,59
        - 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:
Mogami (1884)
Kitakami (1885)
Jinzu (1885)
Yahagi (1886)


Sazanami, japanese flotilla leader laid down 1885

Displacement:
    302 t light; 311 t standard; 390 t normal; 453 t full load

Dimensions: Length overall / water x beam x draught
    185,66 ft / 185,66 ft x 20,47 ft x 7,48 ft (normal load)
    56,59 m / 56,59 m x 6,24 m  x 2,28 m

Armament:
      2 - 1,85" / 47,0 mm guns in single mounts, 2,93lbs / 1,33kg shells, 1885 Model
      Quick firing guns in deck mounts
      on centreline ends, evenly spread
    Weight of broadside 6 lbs / 3 kg
    Shells per gun, main battery: 250
    2 - 15,0" / 381 mm above water torpedoes

Armour:

   - Conning tower: 1,46" / 37 mm

Machinery:
    Coal fired boilers, complex reciprocating steam engines,
    Direct drive, 1 shaft, 3 217 ihp / 2 400 Kw = 20,50 kts
    Range 2 900nm at 10,00 kts
    Bunker at max displacement = 143 tons (100% coal)
      Caution: Delicate, lightweight machinery

Complement:
    43 - 57

Cost:
    £0,042 million / $0,170 million

Distribution of weights at normal displacement:
    Armament: 1 tons, 0,2%
    Armour: 2 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: 2 tons, 0,4%
    Machinery: 223 tons, 57,2%
    Hull, fittings & equipment: 77 tons, 19,6%
    Fuel, ammunition & stores: 88 tons, 22,6%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      83 lbs / 37 Kg = 28,2 x 1,9 " / 47 mm shells or 0,1 torpedoes
    Stability (Unstable if below 1.00): 1,85
    Metacentric height 1,3 ft / 0,4 m
    Roll period: 7,7 seconds
    Steadiness    - As gun platform (Average = 50 %): 58 %
            - Recoil effect (Restricted arc if above 1.00): 0,01
    Seaboat quality  (Average = 1.00): 1,16

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,480
    Length to Beam Ratio: 9,07 : 1
    'Natural speed' for length: 13,63 kts
    Power going to wave formation at top speed: 62 %
    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:        9,88 ft / 3,01 m
       - Forecastle (20%):    7,58 ft / 2,31 m
       - Mid (50%):        7,58 ft / 2,31 m
       - Quarterdeck (15%):    7,58 ft / 2,31 m
       - Stern:        8,76 ft / 2,67 m
       - Average freeboard:    7,85 ft / 2,39 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 186,2%
        - Above water (accommodation/working, high = better): 65,2%
    Waterplane Area: 2 382 Square feet or 221 Square metres
    Displacement factor (Displacement / loading): 31%
    Structure weight / hull surface area: 17 lbs/sq ft or 84 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,46
        - Longitudinal: 1,12
        - 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

Okręty w typie:
Sazanami (1885)
Kazagumo (1886)
Kishinami (1886)

Brak komentarzy:

Prześlij komentarz