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1

Tuesday, June 14th 2011, 3:44am

French Design Ideas

Here's a set of rather random French design ideas. Just kinda playing around with ideas at present - nothing is exactly being seriously proposed unless I get a good response on it.

Here's design one, for an all-forward 9x34cm-gunned "super coast defense ship". In theory, it would be used as a station flagship; light units would be able to fall back on it to provide long-range gunfire support.

Quoted

[SIZE=3]Donawerth, French Station Battleship laid down 1942[/SIZE]

Displacement:
26,765 t light; 28,241 t standard; 30,899 t normal; 33,026 t full load

Dimensions: Length overall / water x beam x draught
734.92 ft / 721.78 ft x 88.58 ft (Bulges 95.14 ft) x 26.25 ft (normal load)
224.00 m / 220.00 m x 27.00 m (Bulges 29.00 m) x 8.00 m

Armament:
9 - 13.39" / 340 mm guns (3x3 guns), 1,199.24lbs / 543.97kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
16 - 4.72" / 120 mm guns (8x2 guns), 52.72lbs / 23.92kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
32 - 0.79" / 20.0 mm guns (16x2 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 11,676 lbs / 5,296 kg
Shells per gun, main battery: 130

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.8" / 350 mm 328.08 ft / 100.00 m 13.45 ft / 4.10 m
Ends: 1.18" / 30 mm 393.70 ft / 120.00 m 11.09 ft / 3.38 m
Upper: 1.18" / 30 mm 426.51 ft / 130.00 m 8.20 ft / 2.50 m
Main Belt covers 70 % of normal length

- Torpedo Bulkhead and Bulges:
2.36" / 60 mm 426.51 ft / 130.00 m 23.20 ft / 7.07 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.0" / 380 mm 11.8" / 300 mm 12.6" / 320 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.79" / 20 mm 0.39" / 10 mm 0.39" / 10 mm
4th: 0.79" / 20 mm 0.39" / 10 mm -

- Armour deck: 5.31" / 135 mm, Conning tower: 13.78" / 350 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 4 shafts, 34,021 shp / 25,380 Kw = 21.00 kts
Range 7,500nm at 18.00 kts
Bunker at max displacement = 4,784 tons

Complement:
1,164 - 1,514

Cost:
£14.555 million / $58.219 million

Distribution of weights at normal displacement:
Armament: 1,459 tons, 4.7 %
Armour: 11,935 tons, 38.6 %
- Belts: 3,157 tons, 10.2 %
- Torpedo bulkhead: 865 tons, 2.8 %
- Armament: 3,023 tons, 9.8 %
- Armour Deck: 4,598 tons, 14.9 %
- Conning Tower: 292 tons, 0.9 %
Machinery: 889 tons, 2.9 %
Hull, fittings & equipment: 12,132 tons, 39.3 %
Fuel, ammunition & stores: 4,134 tons, 13.4 %
Miscellaneous weights: 350 tons, 1.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
66,131 lbs / 29,996 Kg = 55.1 x 13.4 " / 340 mm shells or 13.0 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 5.1 ft / 1.5 m
Roll period: 17.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.68
Seaboat quality (Average = 1.00): 1.50

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.600
Length to Beam Ratio: 7.59 : 1
'Natural speed' for length: 26.87 kts
Power going to wave formation at top speed: 35 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.07 ft / 8.25 m
- Forecastle (20 %): 26.25 ft / 8.00 m
- Mid (50 %): 25.43 ft / 7.75 m (18.04 ft / 5.50 m aft of break)
- Quarterdeck (15 %): 18.04 ft / 5.50 m
- Stern: 18.86 ft / 5.75 m
- Average freeboard: 22.15 ft / 6.75 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 61.5 %
- Above water (accommodation/working, high = better): 165.6 %
Waterplane Area: 46,763 Square feet or 4,344 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 179 lbs/sq ft or 872 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.28
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

2

Tuesday, June 14th 2011, 3:51am

I do not see a great deal of value to such a design in an environment where airpower plays a major role - one that is ever-increasing.

Such a unit cannot maneuver in the face of a modern fleet with higher speeds; while its guns can support lighter units, confronted by modern battleships it cannot out run them nor out-fight them.

If distant stations require defense, light forces backed by submarines, minefields and air power should be capable of deterring the raider; if a foe chose to make a major effort only a comparable task force can defend against it.

My two dinar.

3

Tuesday, June 14th 2011, 3:52am

Different weapons layout - drop one gun, make it 2x4 layout - surprising how much you can gan just from that simple move.

Quoted

[SIZE=3]Arcole, French Station Battleship laid down 1942[/SIZE]

Displacement:
26,852 t light; 28,241 t standard; 30,899 t normal; 33,026 t full load

Dimensions: Length overall / water x beam x draught
734.92 ft / 721.78 ft x 88.58 ft (Bulges 95.14 ft) x 26.25 ft (normal load)
224.00 m / 220.00 m x 27.00 m (Bulges 29.00 m) x 8.00 m

Armament:
8 - 13.39" / 340 mm guns (2x4 guns), 1,199.24lbs / 543.97kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
16 - 4.72" / 120 mm guns (8x2 guns), 52.72lbs / 23.92kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
32 - 0.79" / 20.0 mm guns (16x2 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 10,477 lbs / 4,752 kg
Shells per gun, main battery: 130

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.4" / 340 mm 344.49 ft / 105.00 m 13.12 ft / 4.00 m
Ends: 1.18" / 30 mm 377.30 ft / 115.00 m 11.09 ft / 3.38 m
Upper: 1.18" / 30 mm 426.51 ft / 130.00 m 8.20 ft / 2.50 m
Main Belt covers 73 % of normal length

- Torpedo Bulkhead and Bulges:
2.36" / 60 mm 426.51 ft / 130.00 m 23.20 ft / 7.07 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.0" / 380 mm 11.8" / 300 mm 12.6" / 320 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.79" / 20 mm 0.39" / 10 mm 0.39" / 10 mm
4th: 0.79" / 20 mm 0.39" / 10 mm -

- Armour deck: 5.31" / 135 mm, Conning tower: 13.78" / 350 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 4 shafts, 75,236 shp / 56,126 Kw = 26.00 kts
Range 7,500nm at 18.00 kts
Bunker at max displacement = 4,784 tons

Complement:
1,164 - 1,514

Cost:
£14.732 million / $58.927 million

Distribution of weights at normal displacement:
Armament: 1,310 tons, 4.2 %
Armour: 11,089 tons, 35.9 %
- Belts: 3,105 tons, 10.1 %
- Torpedo bulkhead: 865 tons, 2.8 %
- Armament: 2,228 tons, 7.2 %
- Armour Deck: 4,598 tons, 14.9 %
- Conning Tower: 292 tons, 0.9 %
Machinery: 1,965 tons, 6.4 %
Hull, fittings & equipment: 12,138 tons, 39.3 %
Fuel, ammunition & stores: 4,048 tons, 13.1 %
Miscellaneous weights: 350 tons, 1.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
57,482 lbs / 26,073 Kg = 47.9 x 13.4 " / 340 mm shells or 10.4 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 5.3 ft / 1.6 m
Roll period: 17.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.62
Seaboat quality (Average = 1.00): 1.43

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.600
Length to Beam Ratio: 7.59 : 1
'Natural speed' for length: 26.87 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.07 ft / 8.25 m
- Forecastle (20 %): 26.25 ft / 8.00 m
- Mid (50 %): 25.43 ft / 7.75 m (18.04 ft / 5.50 m aft of break)
- Quarterdeck (15 %): 18.04 ft / 5.50 m
- Stern: 18.86 ft / 5.75 m
- Average freeboard: 22.15 ft / 6.75 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 71.2 %
- Above water (accommodation/working, high = better): 165.6 %
Waterplane Area: 46,763 Square feet or 4,344 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 179 lbs/sq ft or 872 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.29
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

4

Tuesday, June 14th 2011, 4:03am

Getting steadily larger, this is nearly a treaty battleship in size.

Quoted

[SIZE=3]Valmy, French Light Battleship laid down 1942[/SIZE]

Displacement:
33,643 t light; 35,724 t standard; 39,502 t normal; 42,524 t full load

Dimensions: Length overall / water x beam x draught
833.34 ft / 820.21 ft x 91.86 ft (Bulges 98.43 ft) x 29.53 ft (normal load)
254.00 m / 250.00 m x 28.00 m (Bulges 30.00 m) x 9.00 m

Armament:
8 - 14.96" / 380 mm guns (2x4 guns), 2,039.28lbs / 925.00kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
20 - 4.72" / 120 mm guns (10x2 guns), 61.73lbs / 28.00kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
16 - 1.57" / 40.0 mm guns (4x4 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
32 - 0.79" / 20.0 mm guns (16x2 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 17,588 lbs / 7,978 kg
Shells per gun, main battery: 130

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.4" / 340 mm 393.70 ft / 120.00 m 13.12 ft / 4.00 m
Ends: 1.18" / 30 mm 377.30 ft / 115.00 m 11.09 ft / 3.38 m
49.21 ft / 15.00 m Unarmoured ends
Upper: 1.18" / 30 mm 426.51 ft / 130.00 m 8.20 ft / 2.50 m
Main Belt covers 74 % of normal length

- Torpedo Bulkhead and Bulges:
2.36" / 60 mm 426.51 ft / 130.00 m 23.20 ft / 7.07 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.0" / 380 mm 11.8" / 300 mm 12.6" / 320 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.79" / 20 mm 0.39" / 10 mm 0.39" / 10 mm
4th: 0.79" / 20 mm 0.39" / 10 mm -

- Armour deck: 5.31" / 135 mm, Conning tower: 13.78" / 350 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Geared drive, 4 shafts, 85,381 shp / 63,694 Kw = 27.00 kts
Range 10,000nm at 18.00 kts
Bunker at max displacement = 6,800 tons

Complement:
1,400 - 1,821

Cost:
£19.161 million / $76.643 million

Distribution of weights at normal displacement:
Armament: 1,811 tons, 4.6 %
Armour: 12,749 tons, 32.3 %
- Belts: 3,450 tons, 8.7 %
- Torpedo bulkhead: 865 tons, 2.2 %
- Armament: 2,550 tons, 6.5 %
- Armour Deck: 5,540 tons, 14.0 %
- Conning Tower: 344 tons, 0.9 %
Machinery: 2,230 tons, 5.6 %
Hull, fittings & equipment: 16,503 tons, 41.8 %
Fuel, ammunition & stores: 5,859 tons, 14.8 %
Miscellaneous weights: 350 tons, 0.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
70,092 lbs / 31,793 Kg = 41.9 x 15.0 " / 380 mm shells or 11.5 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 5.4 ft / 1.6 m
Roll period: 17.8 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.88
Seaboat quality (Average = 1.00): 1.41

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.580
Length to Beam Ratio: 8.33 : 1
'Natural speed' for length: 32.87 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.07 ft / 8.25 m
- Forecastle (20 %): 26.25 ft / 8.00 m
- Mid (50 %): 25.43 ft / 7.75 m (18.04 ft / 5.50 m aft of break)
- Quarterdeck (15 %): 18.04 ft / 5.50 m
- Stern: 18.86 ft / 5.75 m
- Average freeboard: 22.15 ft / 6.75 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 71.3 %
- Above water (accommodation/working, high = better): 165.9 %
Waterplane Area: 56,345 Square feet or 5,235 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 205 lbs/sq ft or 999 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.22
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

5

Tuesday, June 14th 2011, 4:08am

Continuing along, here's a 1942-dated brand-new version of the existing French France-class battleship. A bit down on speed, but...

Quoted

[SIZE=3]Napoleon-class, French Battleship laid down 1942[/SIZE]

Displacement:
40,119 t light; 42,679 t standard; 49,056 t normal; 54,158 t full load

Dimensions: Length overall / water x beam x draught
776.24 ft / 767.72 ft x 114.83 ft (Bulges 118.11 ft) x 31.82 ft (normal load)
236.60 m / 234.00 m x 35.00 m (Bulges 36.00 m) x 9.70 m

Armament:
12 - 15.00" / 381 mm guns (4x3 guns), 2,039.28lbs / 925.00kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 4.72" / 120 mm guns (8x2 guns), 61.73lbs / 28.00kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 4 raised mounts - superfiring
48 - 1.57" / 40.0 mm guns (12x4 guns), 1.95lbs / 0.88kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
36 - 0.79" / 20.0 mm guns (18x2 guns), 0.24lbs / 0.11kg shells, 1942 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 25,561 lbs / 11,594 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.2" / 360 mm 442.91 ft / 135.00 m 12.47 ft / 3.80 m
Ends: Unarmoured
Main Belt covers 89 % of normal length

- Torpedo Bulkhead and Bulges:
2.36" / 60 mm 438.16 ft / 133.55 m 28.87 ft / 8.80 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.7" / 400 mm 7.87" / 200 mm 11.8" / 300 mm
2nd: 0.98" / 25 mm 0.20" / 5 mm -
3rd: 0.98" / 25 mm 0.20" / 5 mm -

- Armour deck: 5.51" / 140 mm, Conning tower: 15.75" / 400 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 114,934 shp / 85,741 Kw = 27.00 kts
Range 14,000nm at 18.00 kts
Bunker at max displacement = 11,479 tons

Complement:
1,647 - 2,142

Cost:
£25.773 million / $103.093 million

Distribution of weights at normal displacement:
Armament: 2,650 tons, 5.4 %
Armour: 15,054 tons, 30.7 %
- Belts: 3,500 tons, 7.1 %
- Torpedo bulkhead: 1,106 tons, 2.3 %
- Armament: 3,450 tons, 7.0 %
- Armour Deck: 6,544 tons, 13.3 %
- Conning Tower: 455 tons, 0.9 %
Machinery: 3,002 tons, 6.1 %
Hull, fittings & equipment: 19,162 tons, 39.1 %
Fuel, ammunition & stores: 8,938 tons, 18.2 %
Miscellaneous weights: 250 tons, 0.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
70,897 lbs / 32,158 Kg = 42.0 x 15.0 " / 381 mm shells or 12.6 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 7.7 ft / 2.3 m
Roll period: 17.9 seconds
Steadiness - As gun platform (Average = 50 %): 63 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.595
Length to Beam Ratio: 6.50 : 1
'Natural speed' for length: 27.71 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 61
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.82 ft / 9.70 m
- Forecastle (20 %): 21.00 ft / 6.40 m
- Mid (50 %): 18.04 ft / 5.50 m
- Quarterdeck (20 %): 13.45 ft / 4.10 m (18.04 ft / 5.50 m before break)
- Stern: 13.45 ft / 4.10 m
- Average freeboard: 19.03 ft / 5.80 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 75.6 %
- Above water (accommodation/working, high = better): 139.4 %
Waterplane Area: 64,175 Square feet or 5,962 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 227 lbs/sq ft or 1,110 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.17
- Overall: 1.01
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent

6

Tuesday, June 14th 2011, 4:11am

Valmy, French Light Battleship

This is a rather different kettle of fish.

Her speed is closer to modern designs (though a knot or two more would be nice) and the armament layout not unreasonable and following in French tradition. The secondary batteries are good as well as the AA outfit. There is enough miscellaneous weight to cover a reasonable outfit of radar and fire control directors.

I could see this design as the core of a battle group; by saving tonnage compared with a Sachsen or an Admiral a nation might be able to afford the aircraft carriers to complement a Valmy or two.

7

Tuesday, June 14th 2011, 4:15am

Napoleon-class, French Battleship

Zounds, this one is right in the main stream.

I think that perhaps you could trade radius for a bit more speed - though if you were planning to use these on independent operations the radius isn't bad to have.

Unfortunately independent operations by very large units will end rather badly, as your enemy will eventually find them and bring sufficient forces (air and naval) to bear to eliminate the threat. But it would take a lot to accomplish.

8

Tuesday, June 14th 2011, 4:19am

RE: Valmy, French Light Battleship

Quoted

Originally posted by BruceDuncan
This is a rather different kettle of fish.

Her speed is closer to modern designs (though a knot or two more would be nice) and the armament layout not unreasonable and following in French tradition. The secondary batteries are good as well as the AA outfit. There is enough miscellaneous weight to cover a reasonable outfit of radar and fire control directors.

I could see this design as the core of a battle group; by saving tonnage compared with a Sachsen or an Admiral a nation might be able to afford the aircraft carriers to complement a Valmy or two.

Oh, absolutely. It's actually pretty close to the Wesworld Richelieu-class, which in some aspects would admittedly be a slightly better design: roughly similar armament, but more range and two extra knots of speed. A bit extra protection and miscellaneous weight on the Richelieu would be nice, though.

9

Tuesday, June 14th 2011, 4:34am

Since Bruce reminded me of it - here's a modernized version of the WW French Richelieu. In most respects it's about the same as the original, but there's more miscellaneous weight, the 152mm secondaries are in triples (like the historical Richelieu), and the TDS is substantially improved.

Quoted

[SIZE=3]Richelieu II, French Battleship laid down 1942[/SIZE]

Displacement:
35,000 t light; 36,963 t standard; 41,541 t normal; 45,204 t full load

Dimensions: Length overall / water x beam x draught
787.06 ft / 771.00 ft x 104.99 ft (Bulges 114.83 ft) x 30.02 ft (normal load)
239.90 m / 235.00 m x 32.00 m (Bulges 35.00 m) x 9.15 m

Armament:
8 - 15.00" / 381 mm guns (2x4 guns), 2,039.28lbs / 925.00kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
9 - 5.98" / 152 mm guns (3x3 guns), 110.23lbs / 50.00kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline, all aft, 1 raised mount - superfiring
12 - 4.72" / 120 mm guns (6x2 guns), 61.73lbs / 28.00kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, 2 raised mounts
48 - 1.57" / 40.0 mm guns (12x4 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 18,141 lbs / 8,229 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.4" / 340 mm 393.70 ft / 120.00 m 12.47 ft / 3.80 m
Ends: 1.18" / 30 mm 229.66 ft / 70.00 m 9.84 ft / 3.00 m
147.64 ft / 45.00 m Unarmoured ends
Main Belt covers 79 % of normal length

- Torpedo Bulkhead and Bulges:
2.36" / 60 mm 383.86 ft / 117.00 m 26.90 ft / 8.20 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.7" / 450 mm 7.87" / 200 mm 13.8" / 350 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.57" / 40 mm
3rd: 0.98" / 25 mm 0.20" / 5 mm -
4th: 0.98" / 25 mm 0.20" / 5 mm -

- Armour deck: 5.51" / 140 mm, Conning tower: 17.72" / 450 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 115,307 shp / 86,019 Kw = 29.00 kts
Range 12,000nm at 18.00 kts
Bunker at max displacement = 8,241 tons

Complement:
1,454 - 1,891

Cost:
£20.629 million / $82.517 million

Distribution of weights at normal displacement:
Armament: 1,899 tons, 4.6 %
Armour: 12,667 tons, 30.5 %
- Belts: 3,072 tons, 7.4 %
- Torpedo bulkhead: 903 tons, 2.2 %
- Armament: 2,254 tons, 5.4 %
- Armour Deck: 5,980 tons, 14.4 %
- Conning Tower: 458 tons, 1.1 %
Machinery: 3,012 tons, 7.3 %
Hull, fittings & equipment: 17,072 tons, 41.1 %
Fuel, ammunition & stores: 6,541 tons, 15.7 %
Miscellaneous weights: 350 tons, 0.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
65,424 lbs / 29,676 Kg = 38.8 x 15.0 " / 381 mm shells or 11.9 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 6.8 ft / 2.1 m
Roll period: 18.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.13

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.547
Length to Beam Ratio: 6.71 : 1
'Natural speed' for length: 32.58 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 34.45 ft / 10.50 m
- Forecastle (30 %): 21.33 ft / 6.50 m
- Mid (50 %): 19.03 ft / 5.80 m
- Quarterdeck (20 %): 19.03 ft / 5.80 m
- Stern: 20.67 ft / 6.30 m
- Average freeboard: 21.69 ft / 6.61 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74.4 %
- Above water (accommodation/working, high = better): 149.7 %
Waterplane Area: 58,646 Square feet or 5,448 Square metres
Displacement factor (Displacement / loading): 121 %
Structure weight / hull surface area: 213 lbs/sq ft or 1,038 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.37
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun

10

Tuesday, June 14th 2011, 4:48am

Alternate with all-DP 120mm secondaries


[SIZE=1]Image by thesmilingassassin and modified by me.[/SIZE]

Quoted

[SIZE=3]Jean Bart, French Battleship laid down 1942[/SIZE]

Displacement:
35,000 t light; 36,930 t standard; 41,536 t normal; 45,220 t full load

Dimensions: Length overall / water x beam x draught
787.06 ft / 771.00 ft x 104.99 ft (Bulges 114.83 ft) x 29.20 ft (normal load)
239.90 m / 235.00 m x 32.00 m (Bulges 35.00 m) x 8.90 m

Armament:
8 - 15.00" / 381 mm guns (2x4 guns), 2,039.28lbs / 925.00kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
20 - 4.72" / 120 mm guns (10x2 guns), 61.73lbs / 28.00kg shells, 1942 Model
Automatic rapid fire guns in deck mounts with hoists
on side, evenly spread, 4 raised mounts
48 - 1.57" / 40.0 mm guns (6x8 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
48 - 0.79" / 20.0 mm guns (12x4 guns), 0.24lbs / 0.11kg shells, 1942 Model
Dual purpose guns in deck mounts
on side, evenly spread
Weight of broadside 17,654 lbs / 8,008 kg
Shells per gun, main battery: 110

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.4" / 340 mm 393.70 ft / 120.00 m 12.47 ft / 3.80 m
Ends: 1.18" / 30 mm 229.66 ft / 70.00 m 9.84 ft / 3.00 m
147.64 ft / 45.00 m Unarmoured ends
Main Belt covers 79 % of normal length

- Torpedo Bulkhead and Bulges:
2.36" / 60 mm 383.86 ft / 117.00 m 26.90 ft / 8.20 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 17.7" / 450 mm 7.87" / 200 mm 13.8" / 350 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.57" / 40 mm
3rd: 0.98" / 25 mm 0.20" / 5 mm -
4th: 0.98" / 25 mm 0.20" / 5 mm -

- Armour deck: 5.51" / 140 mm, Conning tower: 17.72" / 450 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 116,392 shp / 86,829 Kw = 29.00 kts
Range 12,000nm at 18.00 kts
Bunker at max displacement = 8,290 tons

Complement:
1,454 - 1,891

Cost:
£20.441 million / $81.763 million

Distribution of weights at normal displacement:
Armament: 1,859 tons, 4.5 %
Armour: 12,727 tons, 30.6 %
- Belts: 3,075 tons, 7.4 %
- Torpedo bulkhead: 903 tons, 2.2 %
- Armament: 2,223 tons, 5.4 %
- Armour Deck: 6,069 tons, 14.6 %
- Conning Tower: 458 tons, 1.1 %
Machinery: 3,041 tons, 7.3 %
Hull, fittings & equipment: 17,024 tons, 41.0 %
Fuel, ammunition & stores: 6,536 tons, 15.7 %
Miscellaneous weights: 350 tons, 0.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
66,747 lbs / 30,276 Kg = 39.6 x 15.0 " / 381 mm shells or 12.2 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 6.9 ft / 2.1 m
Roll period: 18.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.48
Seaboat quality (Average = 1.00): 1.10

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.562
Length to Beam Ratio: 6.71 : 1
'Natural speed' for length: 32.52 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 34.45 ft / 10.50 m
- Forecastle (30 %): 21.33 ft / 6.50 m
- Mid (50 %): 19.03 ft / 5.80 m
- Quarterdeck (20 %): 19.03 ft / 5.80 m
- Stern: 20.67 ft / 6.30 m
- Average freeboard: 21.69 ft / 6.61 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 73.7 %
- Above water (accommodation/working, high = better): 151.9 %
Waterplane Area: 59,514 Square feet or 5,529 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 211 lbs/sq ft or 1,029 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.33
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

11

Tuesday, June 14th 2011, 4:54am

Quoted

[SIZE=3]Ville de Marseille-class, French Croiseur de Bataille laid down 1942[/SIZE]

Displacement:
43,861 t light; 46,124 t standard; 51,390 t normal; 55,603 t full load

Dimensions: Length overall / water x beam x draught
885.31 ft / 875.00 ft x 90.55 ft (Bulges 106.96 ft) x 33.14 ft (normal load)
269.84 m / 266.70 m x 27.60 m (Bulges 32.60 m) x 10.10 m

Armament:
8 - 15.00" / 381 mm guns (2x4 guns), 2,039.28lbs / 925.00kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
6 - 5.43" / 138 mm guns (3x2 guns), 80.19lbs / 36.37kg shells, 1942 Model
Automatic rapid fire guns in turrets (on barbettes)
on centreline, all aft, 2 raised mounts - superfiring
16 - 5.43" / 138 mm guns (8x2 guns), 80.19lbs / 36.37kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, 4 raised mounts
8 - 1.57" / 40.0 mm guns (2x4 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
32 - 1.57" / 40.0 mm guns (8x4 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, 4 raised mounts
Weight of broadside 18,156 lbs / 8,236 kg
Shells per gun, main battery: 120

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.0" / 330 mm 518.37 ft / 158.00 m 13.12 ft / 4.00 m
Ends: 1.18" / 30 mm 354.33 ft / 108.00 m 9.84 ft / 3.00 m
2.30 ft / 0.70 m Unarmoured ends
Main Belt covers 91 % of normal length

- Torpedo Bulkhead and Bulges:
1.97" / 50 mm 518.37 ft / 158.00 m 33.79 ft / 10.30 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 21.7" / 550 mm 7.87" / 200 mm 12.6" / 320 mm
2nd: 5.91" / 150 mm 3.94" / 100 mm 5.12" / 130 mm
3rd: 0.98" / 25 mm 0.20" / 5 mm -
4th: 0.98" / 25 mm 0.20" / 5 mm -
5th: 0.98" / 25 mm 0.20" / 5 mm -

- Armour deck: 5.31" / 135 mm, Conning tower: 17.72" / 450 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 233,777 shp / 174,397 Kw = 34.00 kts
Range 12,000nm at 18.00 kts
Bunker at max displacement = 9,479 tons

Complement:
1,706 - 2,218

Cost:
£25.525 million / $102.102 million

Distribution of weights at normal displacement:
Armament: 1,930 tons, 3.8 %
Armour: 14,612 tons, 28.4 %
- Belts: 3,909 tons, 7.6 %
- Torpedo bulkhead: 1,276 tons, 2.5 %
- Armament: 3,073 tons, 6.0 %
- Armour Deck: 5,826 tons, 11.3 %
- Conning Tower: 528 tons, 1.0 %
Machinery: 6,107 tons, 11.9 %
Hull, fittings & equipment: 20,862 tons, 40.6 %
Fuel, ammunition & stores: 7,529 tons, 14.7 %
Miscellaneous weights: 350 tons, 0.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
77,292 lbs / 35,059 Kg = 45.8 x 15.0 " / 381 mm shells or 11.1 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 5.3 ft / 1.6 m
Roll period: 19.6 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.84
Seaboat quality (Average = 1.00): 1.28

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.580
Length to Beam Ratio: 8.18 : 1
'Natural speed' for length: 34.00 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 41.34 ft / 12.60 m
- Forecastle (26 %): 29.86 ft / 9.10 m
- Mid (50 %): 29.53 ft / 9.00 m
- Quarterdeck (15 %): 29.53 ft / 9.00 m
- Stern: 31.17 ft / 9.50 m
- Average freeboard: 30.97 ft / 9.44 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.4 %
- Above water (accommodation/working, high = better): 195.8 %
Waterplane Area: 59,250 Square feet or 5,505 Square metres
Displacement factor (Displacement / loading): 121 %
Structure weight / hull surface area: 214 lbs/sq ft or 1,045 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.63
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Kaiser Kirk

Lightbringer and former European Imperialist

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12

Tuesday, June 14th 2011, 6:12am

Quoted

Originally posted by BruceDuncan
I do not see a great deal of value to such a design in an environment where airpower plays a major role - one that is ever-increasing.

Such a unit cannot maneuver in the face of a modern fleet with higher speeds; while its guns can support lighter units, confronted by modern battleships it cannot out run them nor out-fight them.

If distant stations require defense, light forces backed by submarines, minefields and air power should be capable of deterring the raider; if a foe chose to make a major effort only a comparable task force can defend against it.

My two dinar.


I agree with Bruce on the Donawerth

While the Dutch did field the Ijelsijk class of similar limitations, that was due to the very particular problems they faced at that time, and trying to shoehorn extra 15" ships in the timeframe between withdrawal from Cleito and the presumed SATSUMA danger period. Further, they had uses in DEI or as part of a force to oppose Bahrat's dreadnaughts. For the Dutch, it was a semi-reasonable solution, but for others- not so much.

Arcole is slightly better, but far to much of a compromise.

I don't think the French face any of those pressures which would justify the building such vessels. If there is a choice between 3x26k and 2x 36k, build the 36k vessels - all other things being equal.

13

Tuesday, June 14th 2011, 7:16pm

Interesting designs all. If I was France and I have to pick IMO the best value for the money would be to refit the Richelieu class with 120mm DP guns to fit the niche of escort for carriers groups and the savings utilized to built proper battleships.

14

Tuesday, June 14th 2011, 7:32pm

What do you mean by "proper battleships"?

15

Tuesday, June 14th 2011, 7:41pm

Quoted

Originally posted by Brockpaine
What do you mean by "proper battleships"?


The last two designs in the thread fit my take on the designation. Good match versus anything afloat in 1942 and should be troublesome enough to the new mega-battleships being built by a lot of nations.

16

Tuesday, June 14th 2011, 7:48pm

Ah.

Unlike the rest of the blue-sky designs here, the last two designs posted - Jean Bart and Ville de Marseille, are actually from my "currently under consideration" file.

17

Tuesday, June 14th 2011, 9:40pm

Ville de Marseille with 2 knots speed dropped and the weight devoted to armour would be my preferance. Either that or a 40,000 tons light Jean Bart with a 32 knot speed.

18

Tuesday, June 14th 2011, 10:24pm

Quoted

Originally posted by thesmilingassassin
Ville de Marseille with 2 knots speed dropped and the weight devoted to armour would be my preferance. Either that or a 40,000 tons light Jean Bart with a 32 knot speed.

That's called a Libertie-class.

19

Tuesday, June 14th 2011, 10:29pm

Then I guess my choice would be to build more Libertie class. :-)

20

Tuesday, June 14th 2011, 10:47pm

Libertie's nice, but not going to build any more of them. Repeat Richelieus - like the Jean Bart above - are just as useful and significantly cheaper.