WesWorld

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Japan’s Naval Developments – Q1/1929

A. Industrial Allocation

27/27 factories producing warship material = 27,000 t. 270 tons stockpiled materials available. Transferred materials from the Philippines: 1,924 t (from Q4). Total materials available: 29,194 t. 29,187 t are used, 7 t materials stockpiled.

0/27 factories are dedicated to producing infrastructure material, = 0x 0.1 = 0.0 points.

B. Infrastructure Development

None.

C. Naval Construction

Kure Navy Yard, Kure (Honshu)
Slip V-1A => idle
Slip I-1A => idle
Slip I-1B => idle
Dock V-1A => X receives 3000 tons.
Free-floating: DD Oboro receives 0 tons.
Free-floating: DD Ushio receives 0 tons.

Yokosuka Navy Yard, Yokosuka (Honshu)
Slip V-2A => idle
Slip I-2A => idle
Slip I-2B => idle
Dock 0-2A => idle
Free-floating: DD Sazanami receives 0 tons.
Free-floating: DD Kawakaze receives 0 tons.

Kawasaki Co, Kobe (Honshu)
Slip V-3A => Fujimiya Ran laid down 1/1/1929. Receives 1866 tons.
Slip II-3A => Aoi Chizoru laid down 1/1/1929. Receives 1866 tons.
Slip I-3A => idle
Dock II-3A => idle
Free-floating: DD Umikaze receives 0 tons.
Free-floating: CV Soryu receives 2184 tons.

Mitsubushi Co, Nagasaki (Kyushu)
Slip V-4A => CL Hidaka Ken laid down 1/1/1929. Receives 1866 tons.
Slip II-4A => CL Kitaura Karen laid down 1/1/1929. Receives 1866 tons.
Slip I-4A => idle
Dock II-4A => idle
Free-floating: DD Suzukaze receives 0 tons.
Free-floating: CV Hiryu receives 2187 tons.

Fukuoka Navy Yard, Fukuoka (Kyushu)
Slip III-5A => CL Kudou Yuji laid down 1/1/1929. Receives 1866 tons.
Slip II-5A => CL Murase Asuka laid down 1/1/1929. Receives 1866 tons.
Slip I-5A => idle
Dock IV-5A => idle
Free-floating: ATT Y'Ami receives 0 tons.

Hakodate Navy Yard, Hakodate (Hokkaido)
Slip III-6A => CL Tsukiyono Omi laid down 1/1/1929. Receives 1866 tons.
Slip II-6A => CL Hibino Nanami laid down 1/1/1929. Receives 1866 tons.
Slip I-6A => idle
Free-floating: ATT Itbayat receives 0 tons.

Aomori Navy Yard, Aomori (Honshu)
Slip III-7A => XPL Kainan Maru receives 2100 tons
Slip I-7A => idle
Dock I-7A => idle
Free-floating: DD Okikaze refit. Moored 1/1/1929. Receives 384 tons.
Free-floating: DD Shimakaze refit. Moored 1/1/1929. Receives 384 tons.
Free-floating: DD Yakaze refit. Moored 1/1/1929. Receives 384 tons.
Free-floating: DD Nadakaze refit. Moored 1/1/1929. Receives 384 tons.

Kagoshima Navy Yard, Kagoshima (Kyushu)
Slip III-8A => XPL Shirase Maru receives 2100 tons
Slip I-8A => idle
Dock I-8A => idle
Slip 0-8A => idle
Slip 0-8B => idle
Dock 0-8A => idle
Free-floating: DD Minekaze refit. Moored 1/1/1929. Receives 384 tons.
Free-floating: DD Sawakaze refit. Moored 1/1/1929. Receives 384 tons.
Free-floating: DD Hakaze refit. Moored 1/1/1929. Receives 384 tons.

Wakayama Navy Yard, Wakayama (Honshu)
Slip III-9A => idle
Slip I-9A => idle
Dock I-9A => idle

Tokushima Navy Yard, Tokushima (Shikoku)
Slip III-10A => idle
Slip I-10A => idle
Dock I-10A => idle

Niigata Navy Yard, Niigata (Honshu)
Slip I-11A => idle
Slip I-11B => idle
Dock III-11A => idle

Niihama Navy Yard, Niihama (Shikoku)
Slip I-12A => idle
Slip I-12B => idle
Dock III-12A => idle


D. Transactions
None.

E. Other Notes
Yugiri and Akebone (Fubuki class DD) continuing shakedown cruises
Yamakaze and Yudachi (Akatsuki class DD) continuing shakedown cruises
Urarake (Atateke class CDS) continuing shakedown cruise
RPB-1 through 10 completing shakedown cruises

New units laid down this quarter:
Light cruisers Fujimiya Ran, Hidaka Ken, Kudou Yuji, Tsukiyono Omi, Aoi Chizoru, Kitaura Karen, Hibino Nanami, Murase Asuka of the WSS class require 3629 tons and 13 months.

Repairs.
None

Refits
Minekaze class, each requiring 384 tons and 3 months.

F. Updated Order of Battle, 3/31/29

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

Limited warships:
Battleships: 9(0)+0
Aircraft Carriers: 2(0)+2
Heavy Cruisers: 9(0)+0
Light Cruisers: 13(0)+8
Destroyers class 1: 0(0)+0
Destroyers class 2: 56(0)+6
Submarines: 7(0)+0
Coast Defense Vessels: 5(0)+0
Museum ships: 2(1)+0

Non-limited ships
Destroyers class 3: 178(45)+0
Gunboats: 46(0)+0
Minelayers: 27(0)+0
Minesweepers: 18(0)+0
Submarine Chasers class 1: 30(0)+0
Submarine Chasers class 2: 42(0)+0
Corvettes: 30(0)+0
Patrol boats: 10(0)+0
Exploration ships: 0(0)+2

Auxiliaries
Ammunition ships: 3(0)+0
Oilers: 9(0)+0
Cargo ships: 31(0)+0
Transport ships: 16(0)+0
Tenders: 7(0)+0
Repair ships: 5(0)+0
Netlayer and target towing vessel: 4(0)+0
Naval Tugs: 12(0)+0

PACIFICA
Agana (Guam)
D1A: idle
D1B: idle
D0: idle
Factory: Under construction. 0.3 points received from Formosa and 0.3 points received from Chosen. (Total 2.6 of 10.0)

Waissu/Shuraiento/Shuwarutsu (best translation to Japlish I could think of; too lazy to search the web for the proper way to write it), Japan Light Cruiser laid down 1929
Ships: 12 (Japan 8, Chosen 2, Formosa 2)

Displacement:
3,629 t light; 3,840 t standard; 4,452 t normal; 4,942 t full load

Dimensions: Length overall / water x beam x draught
507.23 ft / 500.00 ft x 45.50 ft x 17.00 ft (normal load)
154.61 m / 152.40 m x 13.87 m x 5.18 m

Armament:
8 - 5.12" / 130 mm guns (4x2 guns), 70.00lbs / 31.75kg shells, 1921 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 1.97" / 50.0 mm guns (4x2 guns), 4.00lbs / 1.81kg shells, 1926 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread
18 - 0.98" / 25.0 mm guns (6x3 guns), 0.57lbs / 0.26kg shells, 1926 Model
Anti-aircraft guns in deck mounts
on side, all amidships, 2 raised mounts - superfiring
Weight of broadside 602 lbs / 273 kg
Shells per gun, main battery: 350
8 - 24.0" / 609.6 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 1.00" / 25 mm 2.00" / 51 mm
2nd: 1.00" / 25 mm - -
3rd: 1.00" / 25 mm - -

- Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 73,398 shp / 54,755 Kw = 36.25 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,102 tons

Complement:
272 - 354

Cost:
£1.991 million / $7.962 million

Distribution of weights at normal displacement:
Armament: 72 tons, 1.6 %
Armour: 71 tons, 1.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 53 tons, 1.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 17 tons, 0.4 %
Machinery: 2,216 tons, 49.8 %
Hull, fittings & equipment: 1,220 tons, 27.4 %
Fuel, ammunition & stores: 823 tons, 18.5 %
Miscellaneous weights: 50 tons, 1.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,127 lbs / 511 Kg = 16.8 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 2.0 ft / 0.6 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.64
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.403
Length to Beam Ratio: 10.99 : 1
'Natural speed' for length: 25.65 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 82
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.00 ft / 8.23 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (50 %): 18.00 ft / 5.49 m
- Quarterdeck (15 %): 18.00 ft / 5.49 m
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 18.72 ft / 5.71 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 176.1 %
- Above water (accommodation/working, high = better): 125.4 %
Waterplane Area: 14,558 Square feet or 1,352 Square metres
Displacement factor (Displacement / loading): 86 %
Structure weight / hull surface area: 45 lbs/sq ft or 218 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.34
- Overall: 0.55
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily