WesWorld

I'll be building a pair of these seaplane carriers in 1935.

They are based on the Japanese Akitsushima.
http://warships.web4u.cz/lode.php?langua…ida=Akitsushima



Australia Seaplane Carrier laid down 1935

Displacement:
3,254 t light; 3,364 t standard; 4,493 t normal; 5,396 t full load

Dimensions: Length overall / water x beam x draught
370.00 ft / 370.00 ft x 50.00 ft x 17.00 ft (normal load)
112.78 m / 112.78 m x 15.24 m x 5.18 m

Armament:
4 - 4.72" / 120 mm guns (2x2 guns), 52.58lbs / 23.85kg shells, 1935 Model
Dual purpose guns in deck mounts with hoists
on centreline, evenly spread
8 - 1.57" / 40.0 mm guns (2x4 guns), 1.95lbs / 0.88kg shells, 1935 Model
Anti-aircraft guns in deck mounts
on side, all amidships
10 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1935 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 228 lbs / 104 kg
Shells per gun, main battery: 150

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.20" / 30 mm - -

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 20,358 shp / 15,187 Kw = 24.00 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 2,032 tons

Complement:
273 - 356

Cost:
£1.114 million / $4.456 million

Distribution of weights at normal displacement:
Armament: 29 tons, 0.6 %
Armour: 11 tons, 0.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 11 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 578 tons, 12.9 %
Hull, fittings & equipment: 1,436 tons, 32.0 %
Fuel, ammunition & stores: 1,239 tons, 27.6 %
Miscellaneous weights: 1,200 tons, 26.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7,482 lbs / 3,394 Kg = 142.3 x 4.7 " / 120 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 2.4 ft / 0.7 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 1.53

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.500
Length to Beam Ratio: 7.40 : 1
'Natural speed' for length: 19.24 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 33
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: 25.00 ft / 7.62 m
- Forecastle (20 %): 20.00 ft / 6.10 m
- Mid (50 %): 20.00 ft / 6.10 m (15.00 ft / 4.57 m aft of break)
- Quarterdeck (15 %): 15.00 ft / 4.57 m
- Stern: 15.00 ft / 4.57 m
- Average freeboard: 17.90 ft / 5.46 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 76.4 %
- Above water (accommodation/working, high = better): 148.8 %
Waterplane Area: 12,326 Square feet or 1,145 Square metres
Displacement factor (Displacement / loading): 173 %
Structure weight / hull surface area: 69 lbs/sq ft or 338 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.57
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

What sort of flying boats do you envision using?

Big types like the Sunderland (eventually) or smaller things like Walrus or Widgeons?

Mainly big flying boats, Felixstowe F5As now, Sunderlands and Catalinas later. But she should still be capable of operating smaller planes if needed.

BTW I need a name for these ships. Any ideas?

Name them after Australian capes, Cape Grim and Cape Howe perhaps.

Gooney Bird class?

Since they are seaplane carriers, name them after large australian seabirds.

It combines both sea and air.

I just remembered that Australia built a seaplane carrier in OTL called Albatross, so I'll go with Gooney Birds. But I like the Capes idea, and since Im running out of names I can use them.

If Australia pays a reasonable quarterly fee to Japan, we're willing to let you get away with the theft of this Japanese design.

So what is the breakdown of the miscellaneous weights?

Theft? I mean Carmen Sandiego just 'borrowed' a few plans before taking the time machine.

200 t: Facilities for 1 aircraft (or 8 smaller ones)
50 t: Flag facilities
50 t: Crane
200 t: Stores
700 t: Spare???

Quoted

I mean Carmen Sandiego just 'borrowed' a few plans before taking the time machine.

I assume as in "Borrowed them without permission, but with every intention of bringing it back", right?

Quoted

700 t: Spare???

Spare? Nah...
Time Machine? Yeah...

... you still haven't paid the quarterly fee for using that Japanese design.

Seriously, looking if I made a remark on you using the design and if so where (which turned out to be here), I found out that both ships appear only in two quarterly reports. Looking at the "completed ships" bit in the OOB att the bottom of the reports of 1935 as well, you clearly built both ships in 6 months eventhough it should have taken 12.5 months. Now I am lazy to check out other ships, but are you doing the same with all the other ships?

What fee?

I have a tendency to build ships too fast, since I usually forget to check their build times, but then I usually forget I build said ships and add them a few quarters late, so in the end it all works out. Thought I am trying to fix that problem.

The Drawing and the Sim don't match up.......

Not enough main guns in superfiring positions
Not enough secondry guns in superfiring positions

(P.S. - want a spreadsheet to help with the building times??)