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SoloAD — Light Battlecruiser Ernest Renan
#alternatehistory #battleship #france
Published: 2014-09-05 17:34:07 +0000 UTC; Views: 12121; Favourites: 79; Downloads: 159
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Description
More info: solo-ad.livejournal.com/3429.h…
Ernest Renan, France Croiseur de Combat laid down 1927 (Engine 1923)
Displacement:
17 041 t light; 17 776 t standard; 18 718 t normal; 19 472 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(667,30 ft / 645,41 ft) x 81,20 ft x (24,18 / 24,92 ft)
(203,39 m / 196,72 m) x 24,75 m x (7,37 / 7,60 m)
Armament:
8 - 10,79" / 274 mm 50,0 cal guns - 707,68lbs / 321,00kg shells, 80 per gun
Breech loading guns in turret on barbette mounts, 1927 Model
1 x Quad mount on sides, forward deck aft
1 x Quad mount on sides, aft deck forward
10 - 5,46" / 139 mm 40,0 cal guns - 89,51lbs / 40,60kg shells, 150 per gun
Dual purpose guns in deck and hoist mounts, 1927 Model
3 x Twin mounts on centreline ends, majority forward
1 raised mount - superfiring
2 x Twin mounts on sides, aft deck forward
24 - 1,57" / 40,0 mm 40,0 cal guns - 1,68lbs / 0,76kg shells, 1 500 per gun
Auto rapid fire guns in deck mounts, 1928 Model
3 x Quintuple mounts on sides, evenly spread
12 - 0,52" / 13,2 mm 76,0 cal guns - 0,11lbs / 0,05kg shells, 1 500 per gun
Machine guns in deck mounts, 1927 Model
6 x Twin mounts on sides, evenly spread
6 raised mounts
Weight of broadside 6 598 lbs / 2 993 kg
Main Torpedoes
4 - 21,7" / 550 mm, 26,90 ft / 8,20 m torpedoes - 1,840 t each, 7,359 t total
In 2 sets of deck mounted carriage/fixed tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4,92" / 125 mm 153,87 ft / 46,90 m 14,76 ft / 4,50 m
Ends: 2,76" / 70 mm 265,75 ft / 81,00 m 10,99 ft / 3,35 m
225,79 ft / 68,82 m Unarmoured ends
Main Belt covers 37% of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead - Additional damage containing bulkheads:
1,18" / 30 mm 395,14 ft / 120,44 m 22,64 ft / 6,90 m
Beam between torpedo bulkheads 54,13 ft / 16,50 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7,87" / 200 mm 3,54" / 90 mm 5,91" / 150 mm
2nd: 0,98" / 25 mm 0,98" / 25 mm 0,98" / 25 mm
- Armoured deck - single deck:
For and Aft decks: 2,99" / 76 mm
- Conning towers: Forward 5,91" / 150 mm, Aft 0,00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 3 shafts, 135 099 shp / 100 784 Kw = 32,60 kts
Range 4 442nm at 15,00 kts
Bunker at max displacement = 1 696 tons
Complement:
799 - 1 040
Cost:
£6,723 million / $26,893 million
Distribution of weights at normal displacement:
Armament: 1 257 tons, 6,7%
- Guns: 1 248 tons, 6,7%
- Weapons: 9 tons, 0,0%
Armour: 3 572 tons, 19,1%
- Belts: 910 tons, 4,9%
- Torpedo bulkhead: 391 tons, 2,1%
- Armament: 588 tons, 3,1%
- Armour Deck: 1 594 tons, 8,5%
- Conning Tower: 90 tons, 0,5%
Machinery: 4 515 tons, 24,1%
Hull, fittings & equipment: 7 596 tons, 40,6%
Fuel, ammunition & stores: 1 678 tons, 9,0%
Miscellaneous weights: 100 tons, 0,5%
- On freeboard deck: 100 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
18 594 lbs / 8 434 Kg = 29,6 x 10,8 " / 274 mm shells or 1,8 torpedoes
Stability (Unstable if below 1.00): 1,08
Metacentric height 4,3 ft / 1,3 m
Roll period: 16,5 seconds
Steadiness - As gun platform (Average = 50 %): 68 %
- Recoil effect (Restricted arc if above 1.00): 0,70
Seaboat quality (Average = 1.00): 0,94
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a round stern
Block coefficient (normal/deep): 0,517 / 0,522
Length to Beam Ratio: 7,95 : 1
'Natural speed' for length: 25,40 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 72
Bow angle (Positive = bow angles forward): 23,00 degrees
Stern overhang: 9,58 ft / 2,92 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 16,33%, 29,00 ft / 8,84 m, 24,48 ft / 7,46 m
- Forward deck: 42,41%, 24,48 ft / 7,46 m, 27,85 ft / 8,49 m
- Aft deck: 22,58%, 16,50 ft / 5,03 m, 16,50 ft / 5,03 m
- Quarter deck: 18,68%, 16,50 ft / 5,03 m, 17,52 ft / 5,34 m
- Average freeboard: 22,29 ft / 6,79 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 162,0%
- Above water (accommodation/working, high = better): 191,8%
Waterplane Area: 35 467 Square feet or 3 295 Square metres
Displacement factor (Displacement / loading): 101%
Structure weight / hull surface area: 154 lbs/sq ft or 752 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,49
- Overall: 1,00
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
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Comments: 14
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Assymetric wing turret layout is an abomination.
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Very interesting especially given the interest usually paid to the French Navy, but the main armament bother me a bit, the 274/50 has not been found, the last barrel 274 dates the most out of 1893 and it is the 274 / 45. The caliber normally associate with the cruiser is 203/50, it is a choice or a slight took oblivion?
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274/50 is fictional gun were never build.
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Interesting...although I think a main armament layout like that would've gone by the wayside long before a ship of those modern lines was designed.
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