WesWorld

(Error free? I can only hope so)

Japan’s Naval Developments – Q1/1927

A. Industrial Allocation

27/27 factories producing warship material = 27,000 t. No stockpiled materials available. 27,000 t are used, no 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 => DD2 Isonami laid down 1/1/1927. Receives 420 tons.
Slip I-1B => DD2 Hatsuharu laid down 1/1/1927. Receives 426 tons.
Dock V-1A => idle
Free-floating: DD3 N.E.I.N. receives 225 tons.
Free-floating: DD3 Wandam Harrer receives 225 tons.

Yokosuka Navy Yard, Yokosuka (Honshu)
Slip V-2A => idle
Slip I-2A => DD2 Shinonome laid down 1/1/1927. Receives 420 tons.
Slip I-2B => DD2 Nenohi laid down 1/1/1927. Receives 426 tons.
Dock 0-2A => idle
Free-floating: DD3 Lotus receives 225 tons.
Free-floating: DD3 Balounga receives 225 tons.
Free-floating: BC Dairen receives 1915 tons.

Kawasaki Co, Kobe (Honshu)
Slip V-3A => CV Soryu laid down 1/1/1927. Receives 2070 tons.
Slip II-3A => idle
Slip I-3A => DD2 Usugumo laid down 1/1/1927. Receives 420 tons.
Dock II-3A => idle
Free-floating: DD3 The Blazing Empress receives 225 tons.
(Free-floating: CDM Hideyoshi Hashiba receives 1581 tons.)
Free-floating: BC Tai-Pei receives 1915 tons.

Mitsubushi Co, Nagasaki (Kyushu)
Slip V-4A => CV Hiryu laid down 1/1/1927. Receives 2070 tons.
Slip II-4A => idle
Slip I-4A => DD2 Hatsushimo laid doqn 1/1/1927. Receives 426 tons.
Dock II-4A => idle
Free-floating: DD3 Assaram Skins receives 225 tons.
Free-floating: DD3 Banchrotte Borishoi NaphManca receives 51 tons. Completed 2/2/1926

Fukuoka Navy Yard, Fukuoka (Kyushu)
Slip III-5A => idle
Slip II-5A => idle
Slip I-5A => idle
Dock IV-5A => idle
Free-floating: CDBB Chikan Chuui receives 2010 tons.
Free-floating: DD3 Princess I. Yarn Vatshu receives 225 tons.
Free-floating: DD3 Demilight Vatsher receives 51 tons. Completed 2/2/1926

Hakodate Navy Yard, Hakodate (Hokkaido)
Slip III-6A => CA Isawa Maho receives 1692 tons. Launched 3/22/1926
Slip II-6A => idle
Slip I-6A => idle
Free-floating: DD3 Christine V receives 225 tons.
Free-floating: DD3 Ned Swans receives 51 tons. Completed 2/2/1926

Aomori Navy Yard, Aomori (Honshu)
Slip III-7A => CA Shibahime Tsubasa receives 1692 tons. Launched 3/22/1926
Slip I-7A => idle
Dock I-7A => idle
Free-floating: DD3 Viorate Tryton receives 225 tons.
Free-floating: DD3 Eydence Ark Lader receives 51 tons. Completed 2/2/1926
Free-floating: CV Chosen receives 1613 tons.

Kagoshima Navy Yard, Kagoshima (Kyushu)
Slip III-8A => idle
Slip I-8A => idle
Dock I-8A => idle
Slip 0-8A => idle
Slip 0-8B => idle
Dock 0-8A => idle
Free-floating: CA Sena Rika receives 1839 tons.
Free-floating: Brauma Ik receives 225 tons.
Free-floating: DD3 Queen Anessa Tilber receives 51 tons. Completed 2/2/1926

Wakayama Navy Yard, Wakayama (Honshu)
Slip III-9A => idle
Slip I-9A => idle
Dock I-9A => idle
Free-floating: CA Sawada Aya receives 1692 tons.
Free-floating: DD3 Miyaza Heczey receives 51 tons. Completed 2/2/1926

Tokushima Navy Yard, Tokushima (Shikoku)
Slip III-10A => idle
Slip I-10A => idle
Dock I-10A => idle
Free-floating: DD3 Mondo Hotas receives 51 tons. Completed 2/2/1926
Free-floating: CV Formosa receives 1613 tons.

Niigata Navy Yard, Niigata (Honshu)
Slip I-11A => idle
Slip I-11B => idle
Dock III-11A => idle
Free-floating: DD3 Dr. Diamond Neutral receives 51 tons. Completed 2/2/1926

Niihama Navy Yard, Niihama (Shikoku)
Slip I-12A => idle
Slip I-12B => idle
Dock III-12A => idle
Free-floating: DD3 Nonna Strauß receives 51 tons. Completed 2/2/1926
Free-floating: DD3 Natrium Sakurako receives 51 tons. Completed 2/2/1926

D. Transactions
Rashomon transferred to Chosen Royal Navy.
Yojimbo transferred to Formosa Royal Navy.

E. Other Notes
Banchrotte Borishoi NaphManca, Demilight Vatsher, Ned Swans, Eydence Ark Lader, Queen Anessa Tilber, Miyaza Heczey, Mondo Hotas, Dr. Diamond Neutral, Nonna Strauß and Natrium Sakurako (FSS: OC class, DD3) starting shakedown cruises.
Harper (FSS: F class, DD3) continuing shakedown cruise.
Cyclommatus Metallifer, Vogin de Leibuch, Erniuth Dai Gu Fillmore 5, Abien Hietsai, Naias Brünhilde, Gyabcy Galla, Nio Hathler, Krakenbeal Mejojo, Madora Moirai, Joe Jid Matoria, Magdall Atoll, and Haird Grover (FSS: OC class, DD3) continuing shakedown cruises.
Enomoto and Iwao (Tange class, CL) continuing shakedown cruises.
Rashomon and Jojimbo (Rashomon class, CA) completing shakedown cruise.

New units laid down this quarter:
Soryu and Hiryu of the Soryu class require 19997 tons and 29 months.
Isonami, Shinonome and Usugumo of the Fubuki class require 1539 tons and 11 months.
Hatsuharu, Nenohi and Hatsushimo of the Akatsuki class require 1551 tons and 11 months.

Repairs.
None

F. Updated Order of Battle, 3/31/27

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

Limited warships:
Battleships: 7(0)+2
Aircraft Carriers: 3(0)+2
Heavy Cruisers: 6(0)+4
Light Cruisers: 14(0)+0
Destroyers class 1: 0(0)+0
Destroyers class 2: 30(0)+6
Submarines: 7(0)+0
Coast Defense Vessels: 4(0)+0
Museum ships: 2(1)+0

Non-limited Warships
Destroyers class 3: 213(0)+10
Gunboats: 32(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

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 Q1/1927
Agana (Guam)
D1: under construction. 0.3 points received from Formosa and 0.3 points received from Chosen (1.6 of 2.0)

Soryu, Japan Carrier laid down 1927

Displacement:
19,997 t light; 20,589 t standard; 22,685 t normal; 24,362 t full load

Dimensions: Length overall / water x beam x draught
726.38 ft / 720.00 ft x 72.00 ft (Bulges 82.00 ft) x 24.45 ft (normal load)
221.40 m / 219.46 m x 21.95 m (Bulges 24.99 m) x 7.45 m

Armament:
8 - 4.13" / 105 mm guns (4x2 guns), 36.00lbs / 16.33kg shells, 1921 Model
Dual purpose guns in turrets (on barbettes)
on side ends, evenly spread, 2 raised mounts - superfiring
8 - 2.95" / 75.0 mm guns (4x2 guns), 12.00lbs / 5.44kg shells, 1921 Model
Dual purpose guns in turrets (on barbettes)
on side ends, evenly spread
16 - 1.57" / 40.0 mm guns (4x4 guns), 2.00lbs / 0.91kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
24 - 0.98" / 25.0 mm guns (8x3 guns), 0.57lbs / 0.26kg shells, 1926 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 430 lbs / 195 kg
Shells per gun, main battery: 500
Planes: 60

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 7.00" / 178 mm 582.00 ft / 177.39 m 10.90 ft / 3.32 m
Ends: Unarmoured
Main Belt covers 124 % of normal length

- Torpedo Bulkhead and Bulges:
1.00" / 25 mm 582.00 ft / 177.39 m 22.44 ft / 6.84 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 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: 3.50" / 89 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 154,063 shp / 114,931 Kw = 34.30 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 3,773 tons

Complement:
923 - 1,201

Cost:
£5.184 million / $20.737 million

Distribution of weights at normal displacement:
Armament: 54 tons, 0.2 %
Armour: 4,908 tons, 21.6 %
- Belts: 1,794 tons, 7.9 %
- Torpedo bulkhead: 483 tons, 2.1 %
- Armament: 140 tons, 0.6 %
- Armour Deck: 2,439 tons, 10.8 %
- Conning Tower: 52 tons, 0.2 %
Machinery: 4,863 tons, 21.4 %
Hull, fittings & equipment: 6,573 tons, 29.0 %
Fuel, ammunition & stores: 2,688 tons, 11.8 %
Miscellaneous weights: 3,600 tons, 15.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
26,384 lbs / 11,968 Kg = 747.0 x 4.1 " / 105 mm shells or 3.6 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 3.6 ft / 1.1 m
Roll period: 18.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.550
Length to Beam Ratio: 8.78 : 1
'Natural speed' for length: 30.76 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.00 ft / 9.14 m
- Forecastle (20 %): 21.35 ft / 6.51 m
- Mid (50 %): 21.35 ft / 6.51 m
- Quarterdeck (15 %): 21.35 ft / 6.51 m
- Stern: 21.35 ft / 6.51 m
- Average freeboard: 22.04 ft / 6.72 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 124.2 %
- Above water (accommodation/working, high = better): 166.0 %
Waterplane Area: 37,665 Square feet or 3,499 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 112 lbs/sq ft or 545 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.00
- Overall: 1.00
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

That´s pretty heavy armor for a carrier and really good underwaterprotection (bulges, TDS). Together with her high speed she´ll ge hard to catch...

Not a bad design, albeit a little low on planes for 20+kts.

The armour isn't that heavy compared to other similar carriers. The 7" belt provides some protection against 210mm fire, but the belt is both shallow and short compared to the hull length. The TDS is quite good for her speed and hull form, but i think she'll still sink too easily.

For 20kT 60 planes is quite good, certainly better than the 33-60 planes carried by Illustrious et al. Its also the same airgroup carried by Aquila/Europa yet they also carry 20% aircraft as spares.

Altogether she's a bit strange. She isn't armoured well enough, yet also lacks offensive power by having a small airgroup. Her speed should keep her safe, but she can't outrun shells or torpedoes.

Well the Europa is three feet deeper which will give you a significant ammount of additional hull strength. Europa's standard displacement is about the same as the Soryu's normal displacement. I stick to what we agreed upon and use a speed in excess of 34 knots to use the transom stern whereas the Europa uses a transom stern with a speed of a mere 30.74 knots. If I go down to that speed, I could definitely get more out of that ship. So looking at that, I don't think you can really compare the Europa to the Soryu.
Still if you think that she is a bit strange, then I think I have acchieved my goal.
:-)

Going a bit more the Aquila/Europa way, I can get this using the same light and standard displacement:


Soryu, Japan Carrier laid down 1927

Displacement:
19,997 t light; 20,589 t standard; 24,375 t normal; 27,405 t full load

Dimensions: Length overall / water x beam x draught
725.95 ft / 720.00 ft x 74.00 ft (Bulges 84.00 ft) x 27.00 ft (normal load)
221.27 m / 219.46 m x 22.56 m (Bulges 25.60 m) x 8.23 m

Armament:
8 - 5.12" / 130 mm guns (4x2 guns), 70.00lbs / 31.75kg shells, 1921 Model
Dual purpose guns in turrets (on barbettes)
on side ends, evenly spread, 2 raised mounts - superfiring
16 - 1.57" / 40.0 mm guns (2x8 guns), 2.00lbs / 0.91kg shells, 1921 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread
16 - 1.57" / 40.0 mm guns (4x4 guns), 2.00lbs / 0.91kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
24 - 0.98" / 25.0 mm guns (8x3 guns), 0.57lbs / 0.26kg shells, 1926 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 638 lbs / 289 kg
Shells per gun, main battery: 270

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 7.00" / 178 mm 415.00 ft / 126.49 m 10.32 ft / 3.15 m
Ends: Unarmoured
Upper: 4.00" / 102 mm 415.00 ft / 126.49 m 17.00 ft / 5.18 m
Main Belt covers 89 % of normal length

- Torpedo Bulkhead and Bulges:
2.00" / 51 mm 415.00 ft / 126.49 m 24.78 ft / 7.55 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.00" / 102 mm 3.00" / 76 mm 3.00" / 76 mm
2nd: 1.00" / 25 mm - -
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -

- Armour deck: 3.50" / 89 mm, Conning tower: 6.00" / 152 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 103,744 shp / 77,393 Kw = 30.75 kts
Range 6,000nm at 24.00 kts
Bunker at max displacement = 6,816 tons

Complement:
975 - 1,268

Cost:
£4.445 million / $17.781 million

Distribution of weights at normal displacement:
Armament: 76 tons, 0.3 %
Armour: 6,013 tons, 24.7 %
- Belts: 2,478 tons, 10.2 %
- Torpedo bulkhead: 761 tons, 3.1 %
- Armament: 224 tons, 0.9 %
- Armour Deck: 2,441 tons, 10.0 %
- Conning Tower: 109 tons, 0.4 %
Machinery: 3,275 tons, 13.4 %
Hull, fittings & equipment: 6,734 tons, 27.6 %
Fuel, ammunition & stores: 4,378 tons, 18.0 %
Miscellaneous weights: 3,900 tons, 16.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
37,712 lbs / 17,106 Kg = 562.6 x 5.1 " / 130 mm shells or 6.2 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 4.0 ft / 1.2 m
Roll period: 17.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.05
Seaboat quality (Average = 1.00): 1.24

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.522
Length to Beam Ratio: 8.57 : 1
'Natural speed' for length: 30.92 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (20 %): 20.00 ft / 6.10 m
- Mid (50 %): 20.00 ft / 6.10 m
- Quarterdeck (15 %): 20.00 ft / 6.10 m
- Stern: 20.00 ft / 6.10 m
- Average freeboard: 20.64 ft / 6.29 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.5 %
- Above water (accommodation/working, high = better): 147.3 %
Waterplane Area: 37,706 Square feet or 3,503 Square metres
Displacement factor (Displacement / loading): 143 %
Structure weight / hull surface area: 114 lbs/sq ft or 558 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.00
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily