WesWorld

Formosa’s Naval Developments – Q1/1925

A. Industrial Allocation

1/4 factories producing warship material = 1,000 t. No stockpiled materials available. 1,000 t are used, no materials stockpiled.

3/4 factories are dedicated to producing infrastructure material, = 0 pts.

B. Infrastructure Development

D1 at Kaoshiun, 0.3 points

C. Naval Construction

Kaoshiun
D0: idle
D0: idle
D1: under construction
Free floating: Toba refit: 46 tons used. Completed.

Tahei
D0: idle
D1: Akashi reconstruction: 954 tons used.
D2: idle

D. Transactions

None.

E. Other Notes

Refit of the river gunboat Toba requires 46 tons and 1.5 months.
Reconstruction of the protected cruiser Akashi requires 1951 tons and 9 months.
Battle cruiser Tai'Pei, heavy cruiser Yojimbo and the light cruiser Horie are being constructed in Japan.

F. Updated Order of Battle, 31/3/25

Note: Y)+Z = completed (under repair/refit) + under construction

Battle Cruiser: 0(0)+1(*)
Heavy Cruiser: 0(0)+1(*)
Armored Cruiser: 2(0)+0
1st class Cruiser: 1(0)+0
Light Cruiser: 0(0)+1(*)
2nd class Cruiser: 1(0)+0
Protected Cruiser: 2(1)+0
Gunboats: 2(0)+0
River gunboat: 0(1)+0
Destroyers 2nd class: 2(0)+0
Destroyers 3rd class: 3(0)+0
TPB 1st class: 5(0)+0
TPB 2nd class: 7(0)+0

(*) under construction in Japan

Original Akashi data as constructed in 1897:

Akashi, Formosa 2nd Class Cruiser laid down 1897

Displacement:
2,575 t light; 2,685 t standard; 3,115 t normal; 3,447 t full load
Loading submergence 237 tons/feet

Dimensions:
295.00 ft x 42.00 ft x 16.00 ft (normal load)
89.92 m x 12.80 m x 4.88 m

Armament:
2 - 5.91" / 150 mm guns
6 - 4.72" / 120 mm guns
12 - 1.97" / 50 mm QF guns
Weight of broadside 568 lbs / 258 kg
2 - 14.0" / 355.6 mm above water torpedoes

Armour:
Belt 2.00" / 51 mm, ends unarmoured
Belts cover 151 % of normal area
Main gun shields 2.00" / 51 mm
Armour deck 1.00" / 25 mm, Conning tower 5.00" / 127 mm

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 7,930 ihp / 5,916 Kw = 19.50 kts
Range 6,000nm at 10.00 kts

Complement:
208 - 271

Cost:
£0.323 million / $1.293 million

Distribution of weights at normal displacement:
Armament: 71 tons, 2.3 %
Armour: 376 tons, 12.1 %
Belts: 192 tons, 6.2 %, Armament: 7 tons, 0.2 %, Armour Deck: 154 tons, 4.9 %
Conning Tower: 23 tons, 0.7 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 1,238 tons, 39.8 %
Hull, fittings & equipment: 890 tons, 28.6 %
Fuel, ammunition & stores: 540 tons, 17.3 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 2.6

Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.46
Shellfire needed to sink: 1,620 lbs / 735 Kg = 15.7 x 5.9 " / 150 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.5
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 70 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.15
Relative quality as seaboat: 1.23

Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.39
Hull speed coefficient 'M': 6.17
'Natural speed' for length: 17.18 kts
Power going to wave formation at top speed: 55 %
Trim: 57
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 146.1 %
Relative accommodation and working space: 79.5 %
(Average = 100%)
Displacement factor: 88 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.95
(Structure weight / hull surface area: 67 lbs / square foot or 329 Kg / square metre)
Relative longitudinal hull strength: 1.84
(for 11.00 ft / 3.35 m average freeboard, freeboard adjustment -0.99 ft)
Relative composite hull strength: 1.02


Akashi data as reconstructed in 1925:

Akashi, Japan 2nd Class Cruiser laid down 1897 (Engine 1925)

Displacement:
2,601 t light; 2,737 t standard; 3,168 t normal; 3,512 t full load

Dimensions: Length overall / water x beam x draught
303.16 ft / 300.00 ft x 42.00 ft x 16.00 ft (normal load)
92.40 m / 91.44 m x 12.80 m x 4.88 m

Armament:
2 - 5.91" / 150 mm guns in single mounts, 110.00lbs / 49.90kg shells, 1921 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
6 - 4.13" / 105 mm guns in single mounts, 36.00lbs / 16.33kg shells, 1921 Model
Dual purpose guns in turrets (on barbettes)
on side, all amidships
8 - 1.57" / 40.0 mm guns (2x4 guns), 2.00lbs / 0.91kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread
12 - 0.98" / 25.0 mm guns (4x3 guns), 0.57lbs / 0.26kg shells, 1918 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 459 lbs / 208 kg
Shells per gun, main battery: 250
2 - 14.0" / 355.6 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 95.00 ft / 28.96 m 7.78 ft / 2.37 m
Ends: Unarmoured
Main Belt covers 49 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm - 1.00" / 25 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 1.00" / 25 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -

- Armour deck: 3.00" / 76 mm, Conning tower: 5.00" / 127 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 9,711 shp / 7,244 Kw = 20.50 kts
Range 6,000nm at 15.00 kts (Bunkerage = 775 tons)

Complement:
210 - 274

Cost:
£0.181 million / $0.725 million

Distribution of weights at normal displacement:
Armament: 55 tons, 1.7 %
Armour: 796 tons, 25.1 %
- Belts: 230 tons, 7.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 54 tons, 1.7 %
- Armour Deck: 488 tons, 15.4 %
- Conning Tower: 23 tons, 0.7 %
Machinery: 315 tons, 10.0 %
Hull, fittings & equipment: 1,435 tons, 45.3 %
Fuel, ammunition & stores: 567 tons, 17.9 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,248 lbs / 2,834 Kg = 60.7 x 5.9 " / 150 mm shells or 2.1 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 1.6 ft / 0.5 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.29
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.550
Length to Beam Ratio: 7.14 : 1
'Natural speed' for length: 17.32 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 17.90 ft / 5.46 m
- Forecastle (20 %): 10.40 ft / 3.17 m
- Mid (50 %): 10.40 ft / 3.17 m
- Quarterdeck (15 %): 10.40 ft / 3.17 m
- Stern: 10.40 ft / 3.17 m
- Average freeboard: 11.00 ft / 3.35 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 48.2 %
- Above water (accommodation/working, high = better): 78.9 %
Waterplane Area: 8,793 Square feet or 817 Square metres
Displacement factor (Displacement / loading): 170 %
Structure weight / hull surface area: 105 lbs/sq ft or 515 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.51
- Longitudinal: 2.93
- Overall: 1.61
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform