OT-Help with a Springsharp Design

[cv10]

I could use a bit of help with a project/hobby I've been working on. I'm trying to figure out what a realistic size for an air group for an aircraft carrier converted from a dutch Project 1047 Battlecruiser (as realistic as one can be about a fictional conversion for a ship that was never built) I'm still learning how to use the program and my attempts have been...interesting to say the least.

The carrier incorporate American ideas about flight decks and hangers. If anyone who is handy with Springsharp and  some free time who wants to take a crack at this, I'll be very grateful!

[aeson]

There's a guide here for doing carriers in Springsharp, but, honestly, I really don't think that Springsharp was meant to model carriers and I especially don't think it's meant to model conversions. If you want to get a good idea of the air group for a hypothetical Design 1047 carrier conversion, I might suggest starting by looking into the proposed Alaska class conversions instead - the Alaskas are about the same size with loosely-similar armor protection and machinery plants to those planned for the Design 1047.

[oldpop2000]

Here is a carrier design using the carrier design document. The air wing size is my addition based on the numbers

Ark Royal, Great Britain Fleet Carrier laid down 1935

Displacement:
20,798 t light; 21,258 t standard; 22,982 t normal; 24,362 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(806.17 ft / 800.00 ft) x 95.00 ft x (28.00 / 29.01 ft)
(245.72 m / 243.84 m) x 28.96 m x (8.53 / 8.84 m)

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 360.00 ft / 109.73 m 11.70 ft / 3.57 m
Ends: Unarmoured
Main Belt covers 69 % of normal length

- Armoured deck - multiple decks:
For and Aft decks: 3.50" / 89 mm
Forecastle: 3.50" / 89 mm Quarter deck: 3.50" / 89 mm

- Conning towers: Forward 4.00" / 102 mm, Aft 4.00" / 102 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 106,293 shp / 79,295 Kw = 32.00 kts
Range 7,600nm at 15.00 kts
Bunker at max displacement = 3,104 tons

Complement:
933 - 1,213

Cost:
£5.858 million / $23.432 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Armour: 4,108 tons, 17.9 %
- Belts: 850 tons, 3.7 %
- Armour Deck: 3,119 tons, 13.6 %
- Conning Towers: 139 tons, 0.6 %
Machinery: 3,020 tons, 13.1 %
Hull, fittings & equipment: 9,671 tons, 42.1 %
Fuel, ammunition & stores: 2,184 tons, 9.5 %
Miscellaneous weights: 4,000 tons, 17.4 %
- Hull above water: 4,000 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
60,355 lbs / 27,377 Kg = 558.8 x 6 " / 152 mm shells or 4.9 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 5.9 ft / 1.8 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck,
a normal bow and large transom stern
Block coefficient (normal/deep): 0.378 / 0.387
Length to Beam Ratio: 8.42 : 1
'Natural speed' for length: 33.34 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 40.00 %, 35.00 ft / 10.67 m, 35.00 ft / 10.67 m
- Forward deck: 30.00 %, 35.00 ft / 10.67 m, 35.00 ft / 10.67 m
- Aft deck: 15.00 %, 35.00 ft / 10.67 m, 35.00 ft / 10.67 m
- Quarter deck: 15.00 %, 35.00 ft / 10.67 m, 35.00 ft / 10.67 m
- Average freeboard: 35.00 ft / 10.67 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 62.6 %
- Above water (accommodation/working, high = better): 342.1 %
Waterplane Area: 47,872 Square feet or 4,447 Square metres
Displacement factor (Displacement / loading): 162 %
Structure weight / hull surface area: 123 lbs/sq ft or 599 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.49
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily

Air Wing size - 63 aircraft

[oldpop2000]

Here is my design based on 1932 for the USS Yorktown - Note: Springsharp designs always have a higher engine power than was available in the actual ships. My Yorktown is a little different, but it is still over 25,000 SHP over what the Yorktown's actually had. There is nothing that can be done, just go with it. My actual Yorktown copy design is over 50,000 SHP over what she had. Also note that the armor on the deck, conning towers and armament are not entirely like the actual Yorktown. This is just my version of the Yorktown carrier designs. If you are going to duplicate a carrier design, just get the dimensions correct, freeboard, armored deck and guns correct then calculate the air wing. Don't try to get the power correct.

USS Yorktown, USA Carrier laid down 1932

Displacement:
27,522 t light; 28,161 t standard; 31,930 t normal; 34,946 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(803.09 ft / 780.00 ft) x 98.00 ft x (34.00 / 36.20 ft)
(244.78 m / 237.74 m) x 29.87 m x (10.36 / 11.03 m)

Armament:
4 - 5.00" / 127 mm 39.0 cal guns - 59.60lbs / 27.03kg shells, 0 per gun
Breech loading guns in turret on barbette mounts, 1932 Model
2 x 2 row twin mounts on sides amidships
Weight of broadside 238 lbs / 108 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 507.00 ft / 154.53 m 11.88 ft / 3.62 m
Ends: 1.00" / 25 mm 272.98 ft / 83.20 m 11.88 ft / 3.62 m
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
2nd: 0.50" / 13 mm - 0.50" / 13 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 154,775 shp / 115,462 Kw = 32.00 kts
Range 10,000nm at 18.00 kts
Bunker at max displacement = 6,785 tons

Complement:
1,193 - 1,552

Cost:
£7.375 million / $29.500 million

Distribution of weights at normal displacement:
Armament: 60 tons, 0.2 %
- Guns: 60 tons, 0.2 %
Armour: 1,148 tons, 3.6 %
- Belts: 1,128 tons, 3.5 %
- Armament: 20 tons, 0.1 %
Machinery: 4,568 tons, 14.3 %
Hull, fittings & equipment: 11,746 tons, 36.8 %
Fuel, ammunition & stores: 4,408 tons, 13.8 %
Miscellaneous weights: 10,000 tons, 31.3 %
- Hull above water: 10,000 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
52,837 lbs / 23,967 Kg = 489.2 x 6 " / 152 mm shells or 3.7 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 4.8 ft / 1.5 m
Roll period: 18.7 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.430 / 0.442
Length to Beam Ratio: 7.96 : 1
'Natural speed' for length: 27.93 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 40.00 ft / 12.19 m, 40.00 ft / 12.19 m
- Forward deck: 30.00 %, 40.00 ft / 12.19 m, 40.00 ft / 12.19 m
- Aft deck: 35.00 %, 40.00 ft / 12.19 m, 40.00 ft / 12.19 m
- Quarter deck: 15.00 %, 40.00 ft / 12.19 m, 40.00 ft / 12.19 m
- Average freeboard: 40.00 ft / 12.19 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.6 %
- Above water (accommodation/working, high = better): 306.6 %
Waterplane Area: 48,001 Square feet or 4,459 Square metres
Displacement factor (Displacement / loading): 156 %
Structure weight / hull surface area: 130 lbs/sq ft or 637 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.50
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Air Wing Size = 100 aircraft

[oldpop2000]

I've been experimenting with Springsharp. If you design the carrier but disregard the block coefficient slider and the attempt to make the performance 1.00, you can get the engine power exactly correct. In fact I used my Yorktown design as a basis for a new carrier-Enterprise and I was able to get her design almost exact for the original design, engines and all with an air wing size of 84 planes.