quote:

ORIGINAL: MateDow

For my own personal mod, I was wondering what the best way to model a US ASW cruiser would be.

Here is my design:

7,500 tons (standard)
8x5"/38 DP
32x1.1" AA
2 Catapults with 8 aircraft
2 DC Racks on the stern
4 DC Throwers

Now here are my questions...

Will a CL use ASW weaponry for detection and attacks?
Would the game engine handle the vessel better as a CL or CS?

Please let me know if there is any other information that you need.

quote:

ORIGINAL: Shark7

There are also some AKs in there that are DC armed and will attacked if they spot a sub in range.

Have to agree with Gridley380, all that stuff on a 7,500 ton hull is badly overloaded, it would likely be top heavy and unstable.

Here is what I came up with based on a Cleveland class hull, done in Springsharp:

...This would be a stable boat, though wet up front an suffers from reduced performance in heavy weather.

Basically this is a Cleveland class CL that trades in 1 of its aft 6in turrets and its aft 5 in turret to gain the ASW equipment.

quote:


Boise, United States ASW Light Cruiser laid down 1937

Displacement:
7,093 t light; 7,406 t standard; 9,012 t normal; 10,296 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(540.97 ft / 530.00 ft) x 55.00 ft x (20.00 / 22.14 ft)
(164.89 m / 161.54 m) x 16.76 m x (6.10 / 6.75 m)

Armament:
8 - 5.00" / 127 mm 38.0 cal guns - 55.18lbs / 25.03kg shells, 500 per gun
Dual purpose guns in turret on barbette mounts, 1932 Model
2 x Quad mounts on centreline, forward deck forward
1 raised mount - superfiring
24 - 1.10" / 27.9 mm 75.0 cal guns - 0.75lbs / 0.34kg shells, 1,000 per gun
Anti-air guns in deck mounts, 1929 Model
4 x Quad mounts on centreline ends, evenly spread
4 raised mounts
2 x Quad mounts on centreline, aft evenly spread
2 double raised mounts
Weight of broadside 459 lbs / 208 kg
Main Torpedoes
8 - 21.0" / 533 mm, 22.60 ft / 6.89 m torpedoes - 1.525 t each, 12.197 t total
In 2 sets of deck mounted side rotating tubes
2nd Torpedoes
16 - 21.0" / 533 mm, 22.60 ft / 6.89 m torpedoes - 1.525 t each, 24.394 t total
In 2 sets of deck mounted reloads
Main DC/AS Mortars
2 - 745.00 lbs / 337.93 kg Depth Charges + 100 reloads - 33.924 t total
in Stern depth charge racks

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.50" / 64 mm 350.00 ft / 106.68 m 12.00 ft / 3.66 m
Ends: Unarmoured
Main Belt covers 102 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.75" / 19 mm 0.75" / 19 mm 2.00" / 51 mm
2nd: - 0.50" / 13 mm -

- Armoured deck - single deck:
For and Aft decks: 1.00" / 25 mm

- Conning towers: Forward 4.00" / 102 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 82,997 shp / 61,916 Kw = 33.00 kts
Range 13,200nm at 15.00 kts
Bunker at max displacement = 2,890 tons

Complement:
462 - 601

Cost:
£3.333 million / $13.331 million

Distribution of weights at normal displacement:
Armament: 205 tons, 2.3 %
- Guns: 107 tons, 1.2 %
- Weapons: 97 tons, 1.1 %
Armour: 885 tons, 9.8 %
- Belts: 434 tons, 4.8 %
- Armament: 95 tons, 1.1 %
- Armour Deck: 319 tons, 3.5 %
- Conning Tower: 37 tons, 0.4 %
Machinery: 2,300 tons, 25.5 %
Hull, fittings & equipment: 3,143 tons, 34.9 %
Fuel, ammunition & stores: 1,919 tons, 21.3 %
Miscellaneous weights: 560 tons, 6.2 %
- Hull below water: 120 tons
- Hull above water: 30 tons
- On freeboard deck: 280 tons
- Above deck: 130 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,835 lbs / 5,822 Kg = 205.4 x 5.0 " / 127 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 2.5 ft / 0.8 m
Roll period: 14.6 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0.21
Seaboat quality (Average = 1.00): 1.23

Hull form characteristics:
Hull has a flush deck,
an extended bulbous bow and large transom stern
Block coefficient (normal/deep): 0.541 / 0.558
Length to Beam Ratio: 9.64 : 1
'Natural speed' for length: 26.23 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 4.00 ft / 1.22 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 26.00 ft / 7.92 m, 23.00 ft / 7.01 m
- Forward deck: 30.00 %, 23.00 ft / 7.01 m, 21.00 ft / 6.40 m
- Aft deck: 35.00 %, 21.00 ft / 6.40 m, 22.00 ft / 6.71 m
- Quarter deck: 15.00 %, 22.00 ft / 6.71 m, 22.00 ft / 6.71 m
- Average freeboard: 22.27 ft / 6.79 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.6 %
- Above water (accommodation/working, high = better): 172.2 %
Waterplane Area: 20,997 Square feet or 1,951 Square metres
Displacement factor (Displacement / loading): 140 %
Structure weight / hull surface area: 86 lbs/sq ft or 420 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.32
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

quote:

ORIGINAL: dwg

Without getting into any of the designs, I'm surprised no one has mentioned USS Norfolk, CLK-1 (DL-1 by the time she commissioned) http://en.wikipedia.org/wiki/USS_Norfolk_(DL-1)

quote:

ORIGINAL: MateDow

I figured 280 tons for the aircraft complement in my design.

quote:

ORIGINAL: mike scholl 1

The obvious answer in WW II was the "Hunter-Killer" TF of a CVE and a half dozen DE's. Unfortunately the game doesn't really allow such TF's.

quote:

ORIGINAL: msieving1

quote:

ORIGINAL: mike scholl 1

The obvious answer in WW II was the "Hunter-Killer" TF of a CVE and a half dozen DE's. Unfortunately the game doesn't really allow such TF's.

Would a CVE TF with a CVE and 2 DEs combined with a ASW TF with 4 DEs work?

quote:

ORIGINAL: Gridley380

Found your problem. :-)

Aircraft, cranes, catapults, fuel storage & pumps, magazine & handling equipment, flight & deck crew quarters & support, hanger structure, tooling for maintenance & repairs... that's just off the top of my head. Note that on just about every surface combatant that carried aircraft ever built the hanger is one of the recognition features and often forced design decisions of either the hull, the superstructure, or both.

quote:

ORIGINAL: mike scholl 1

The real question is WHY? Why build a larger ship for a job that a smaller one can do better? With today's weapons systems, it makes some sense..., but the only reason I can see to do so in the WW II era is increased range. The obvious answer in WW II was the "Hunter-Killer" TF of a CVE and a half dozen DE's. Unfortunately the game doesn't really allow such TF's.

quote:

ORIGINAL: MateDow

What would be a more realistic value?

I haven't been able to find values for the air outfit on the US cruisers. I do know that it was significant enough that they were willing to cut the air complement of the pre-war heavy cruisers in half as compensation for AA guns and radar equipment. It also couldn't have been that heavy since they were able to build a Fletcher-class destroyer that could carry a single aircraft and the only compensation was a single 5"/38 mount.