The idea is to have a light cruiser which can hold it's ground vs enemy cruisers but is able to support destroyers in defeating enemy destroyers.

The former forms the 200mm Auto battery and the latter forms the 150mm Auto battery.

The arrangement is AB-XY where the 200mm Autos occupy the A-Y slots and the 150mm Autos occupy the B-X slots.

Here is the data sheet + drawing I did prior to the SS. I did not account for the influence of the guns in the data sheet. Going into the SS, recoil was a bit high and strength was just a tad low, so this was corrected by adding a 0.70m bulge in the SS.

Edit: Fixed weight locations and added 2x2 57mm guns on the fore and aft bridges

The former forms the 200mm Auto battery and the latter forms the 150mm Auto battery.

The arrangement is AB-XY where the 200mm Autos occupy the A-Y slots and the 150mm Autos occupy the B-X slots.

Here is the data sheet + drawing I did prior to the SS. I did not account for the influence of the guns in the data sheet. Going into the SS, recoil was a bit high and strength was just a tad low, so this was corrected by adding a 0.70m bulge in the SS.

## Quoted

CL 1945, Light Cruiser laid down 1945

Displacement:

8,818 t light; 9,229 t standard; 10,656 t normal; 11,798 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)

(527.62 ft / 524.93 ft) x 52.49 ft (Bulges 54.79 ft) x (24.61 / 26.73 ft)

(160.82 m / 160.00 m) x 16.00 m (Bulges 16.70 m) x (7.50 / 8.15 m)

Armament:

6 - 7.87" / 200 mm 45.0 cal guns - 246.19lbs / 111.67kg shells, 150 per gun

Auto rapid fire guns in deck and hoist mounts, 1945 Model

2 x 3-gun mounts on centreline ends, evenly spread

8 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 150 per gun

Auto rapid fire guns in deck and hoist mounts, 1945 Model

2 x 4-gun mounts on centreline ends, evenly spread

2 raised mounts

4 - 2.24" / 57.0 mm 45.0 cal guns - 5.70lbs / 2.58kg shells, 450 per gun

Anti-air guns in deck and hoist mounts, 1945 Model

2 x Single mounts on centreline ends, evenly spread

2 raised mounts

Weight of broadside 2,331 lbs / 1,057 kg

Armour:

- Belts: Width (max) Length (avg) Height (avg)

Main: 4.92" / 125 mm 387.14 ft / 118.00 m 13.12 ft / 4.00 m

Ends: Unarmoured

Main Belt covers 113 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 1.97" / 50 mm 0.79" / 20 mm 0.79" / 20 mm

2nd: 0.98" / 25 mm 0.59" / 15 mm 0.59" / 15 mm

3rd: 0.51" / 13 mm 0.51" / 13 mm -

- Conning towers: Forward 2.67" / 68 mm, Aft 0.00" / 0 mm

Machinery:

Oil fired boilers, steam turbines,

Geared drive, 2 shafts, 121,901 shp / 90,938 Kw = 34.00 kts

Range 8,000nm at 18.00 kts

Bunker at max displacement = 2,569 tons

Complement:

523 - 681

Cost:

£6.627 million / $26.508 million

Distribution of weights at normal displacement:

Armament: 817 tons, 7.7 %

- Guns: 817 tons, 7.7 %

Armour: 1,084 tons, 10.2 %

- Belts: 1,007 tons, 9.5 %

- Armament: 49 tons, 0.5 %

- Conning Tower: 28 tons, 0.3 %

Machinery: 3,078 tons, 28.9 %

Hull, fittings & equipment: 3,422 tons, 32.1 %

Fuel, ammunition & stores: 1,838 tons, 17.3 %

Miscellaneous weights: 416 tons, 3.9 %

- On freeboard deck: 256 tons

- Above deck: 160 tons

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

8,729 lbs / 3,960 Kg = 35.8 x 7.9 " / 200 mm shells or 1.2 torpedoes

Stability (Unstable if below 1.00): 1.07

Metacentric height 2.2 ft / 0.7 m

Roll period: 15.6 seconds

Steadiness - As gun platform (Average = 50 %): 50 %

- Recoil effect (Restricted arc if above 1.00): 0.87

Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:

Hull has a flush deck,

a normal bow and a cruiser stern

Block coefficient (normal/deep): 0.527 / 0.537

Length to Beam Ratio: 9.58 : 1

'Natural speed' for length: 22.91 kts

Power going to wave formation at top speed: 64 %

Trim (Max stability = 0, Max steadiness = 100): 49

Bow angle (Positive = bow angles forward): 5.43 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 %, 28.22 ft / 8.60 m, 22.97 ft / 7.00 m

- Forward deck: 30.00 %, 22.97 ft / 7.00 m, 19.69 ft / 6.00 m

- Aft deck: 35.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m

- Quarter deck: 15.00 %, 19.69 ft / 6.00 m, 21.65 ft / 6.60 m

- Average freeboard: 21.40 ft / 6.52 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 113.0 %

- Above water (accommodation/working, high = better): 140.1 %

Waterplane Area: 18,822 Square feet or 1,749 Square metres

Displacement factor (Displacement / loading): 109 %

Structure weight / hull surface area: 107 lbs/sq ft or 522 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 0.89

- Longitudinal: 2.74

- Overall: 1.00

Cramped machinery, storage, compartmentation space

Excellent accommodation and workspace room

128t per 200m mount and 80t per 150mm mount

Edit: Fixed weight locations and added 2x2 57mm guns on the fore and aft bridges

This post has been edited 1 times, last edit by "Logi" (Sep 21st 2013, 2:48am)

Your design is more of a classical CL and perhaps might benefit from more armour.

## Quoted

Originally posted by Logi

It was a conscious decision based on the lack of deck armor on the HMS Revolution, MN Marseillaise, and MN Tonnerre designs by Hood and Brock.

I am not familiar with the doctrine behind such but since both deigned to do away with deck armor in their designs, I followed.

Alright then, I've increased tonnage by 1,200t for a slightly thicker belt and 50mm deck armor.

Edit: Just noticed the report got cut off at the top. Fixed.

Edit: Just noticed the report got cut off at the top. Fixed.

## Quoted

CL 1945 Scheme 4, Light Cruiser laid down 1945

Displacement:

10,000 t light; 10,434 t standard; 11,970 t normal; 13,198 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)

(527.27 ft / 524.93 ft) x 54.13 ft (Bulges 55.77 ft) x (27.15 / 29.37 ft)

(160.71 m / 160.00 m) x 16.50 m (Bulges 17.00 m) x (8.28 / 8.95 m)

Armament:

6 - 7.87" / 200 mm 45.0 cal guns - 246.19lbs / 111.67kg shells, 150 per gun

Auto rapid fire guns in deck and hoist mounts, 1945 Model

2 x 3-gun mounts on centreline ends, evenly spread

8 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 150 per gun

Auto rapid fire guns in deck and hoist mounts, 1945 Model

2 x 4-gun mounts on centreline ends, evenly spread

2 raised mounts

4 - 2.24" / 57.0 mm 45.0 cal guns - 5.71lbs / 2.59kg shells, 150 per gun

Breech loading guns in deck and hoist mounts, 1945 Model

2 x Twin mounts on centreline ends, evenly spread

2 raised mounts

Weight of broadside 2,331 lbs / 1,057 kg

Armour:

- Belts: Width (max) Length (avg) Height (avg)

Main: 4.96" / 126 mm 380.58 ft / 116.00 m 13.12 ft / 4.00 m

Ends: Unarmoured

Main Belt covers 112 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 1.97" / 50 mm 0.79" / 20 mm 0.79" / 20 mm

2nd: 0.98" / 25 mm 0.59" / 15 mm 0.59" / 15 mm

3rd: 0.59" / 15 mm 0.39" / 10 mm -

- Armoured deck - single deck:

For and Aft decks: 1.97" / 50 mm

Forecastle: 1.97" / 50 mm Quarter deck: 1.97" / 50 mm

- Conning towers: Forward 2.95" / 75 mm, Aft 0.00" / 0 mm

Machinery:

Oil fired boilers, steam turbines,

Geared drive, 2 shafts, 131,706 shp / 98,252 Kw = 34.00 kts

Range 8,000nm at 18.00 kts

Bunker at max displacement = 2,764 tons

Complement:

571 - 743

Cost:

£7.152 million / $28.609 million

Distribution of weights at normal displacement:

Armament: 816 tons, 6.8 %

- Guns: 816 tons, 6.8 %

Armour: 1,795 tons, 15.0 %

- Belts: 1,001 tons, 8.4 %

- Armament: 48 tons, 0.4 %

- Armour Deck: 713 tons, 6.0 %

- Conning Tower: 33 tons, 0.3 %

Machinery: 3,326 tons, 27.8 %

Hull, fittings & equipment: 3,648 tons, 30.5 %

Fuel, ammunition & stores: 1,969 tons, 16.5 %

Miscellaneous weights: 416 tons, 3.5 %

- Hull above water: 416 tons

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

10,077 lbs / 4,571 Kg = 41.3 x 7.9 " / 200 mm shells or 1.3 torpedoes

Stability (Unstable if below 1.00): 1.09

Metacentric height 2.3 ft / 0.7 m

Roll period: 15.3 seconds

Steadiness - As gun platform (Average = 50 %): 50 %

- Recoil effect (Restricted arc if above 1.00): 0.83

Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:

Hull has a flush deck,

a normal bow and a cruiser stern

Block coefficient (normal/deep): 0.527 / 0.537

Length to Beam Ratio: 9.41 : 1

'Natural speed' for length: 22.91 kts

Power going to wave formation at top speed: 65 %

Trim (Max stability = 0, Max steadiness = 100): 50

Bow angle (Positive = bow angles forward): 5.43 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 %, 24.61 ft / 7.50 m, 22.31 ft / 6.80 m

- Forward deck: 30.00 %, 22.31 ft / 6.80 m, 21.33 ft / 6.50 m

- Aft deck: 35.00 %, 21.33 ft / 6.50 m, 21.33 ft / 6.50 m

- Quarter deck: 15.00 %, 21.33 ft / 6.50 m, 21.33 ft / 6.50 m

- Average freeboard: 21.85 ft / 6.66 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 111.1 %

- Above water (accommodation/working, high = better): 139.6 %

Waterplane Area: 19,410 Square feet or 1,803 Square metres

Displacement factor (Displacement / loading): 109 %

Structure weight / hull surface area: 108 lbs/sq ft or 529 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 0.88

- Longitudinal: 2.90

- Overall: 1.00

Adequate machinery, storage, compartmentation space

Excellent accommodation and workspace room

128t per 200m mount and 80t per 150mm

This post has been edited 1 times, last edit by "Logi" (Sep 25th 2013, 10:07am)

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