Aviation Cruisers

[Desertfox]

Order of Battle

Wakayima class (1906)
Wakayima

[Desertfox]

Wakayima

One of the four Yodos suffered extensive fire and small caliber gunfire damage to the upper-works at Tablas Strait. Since the Yodos have proven to be not quite good at their job, during repairs (1914) she will instead be converted to an aircraft trial ship. The main armament will be removed and replaced with a flying off platform forward and crane and facilities aft for two aircraft (Curtiss Model F?).

Wakamiya, Japan Aircraft Cruiser laid down 1906

Displacement:
   1,524 t light; 1,565 t standard; 1,834 t normal; 2,049 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (330.00 ft / 330.00 ft) x 34.00 ft x (13.00 / 14.06 ft)
   (100.58 m / 100.58 m) x 10.36 m  x (3.96 / 4.29 m)

Armament:
      4 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 150 per gun
     Breech loading guns in deck mounts, 1906 Model
     4 x Single mounts on sides, evenly spread
      Weight of broadside 54 lbs / 25 kg

Armour:
   - Armoured deck - multiple decks:
   For and Aft decks: 0.50" / 13 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 13,548 shp / 10,107 Kw = 25.00 kts
   Range 4,200nm at 11.00 kts
   Bunker at max displacement = 484 tons (90% coal)

Complement:
   139 - 182

Cost:
   £0.181 million / $0.723 million

Distribution of weights at normal displacement:
   Armament: 9 tons, 0.5 %
      - Guns: 9 tons, 0.5 %
   Armour: 34 tons, 1.8 %
      - Armour Deck: 34 tons, 1.8 %
   Machinery: 890 tons, 48.5 %
   Hull, fittings & equipment: 506 tons, 27.6 %
   Fuel, ammunition & stores: 310 tons, 16.9 %
   Miscellaneous weights: 85 tons, 4.6 %
      - On freeboard deck: 85 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     819 lbs / 372 Kg = 7.6 x 6 " / 152 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.41
   Metacentric height 1.8 ft / 0.6 m
   Roll period: 10.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.440 / 0.455
   Length to Beam Ratio: 9.71 : 1
   'Natural speed' for length: 18.17 kts
   Power going to wave formation at top speed: 56 %
   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:   50.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Forward deck:   30.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Aft deck:   5.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Quarter deck:   15.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Average freeboard:      10.00 ft / 3.05 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 158.5 %
      - Above water (accommodation/working, high = better): 97.2 %
   Waterplane Area: 7,100 Square feet or 660 Square metres
   Displacement factor (Displacement / loading): 89 %
   Structure weight / hull surface area: 44 lbs/sq ft or 216 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.87
      - Longitudinal: 1.15
      - Overall: 0.90
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t - LR Wireless
10t - Observation Balloon
50t - 1910 Aircraft Accommodations