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1

Thursday, February 24th 2011, 4:29am

French Destroyers

French Destroyers

Le Fantasque class Destroyers
- Le Fantasque: Laid down at La Rochelle January 1933, completed December 1933
- Le Malin: Laid down at La Rochelle January 1933, completed December 1933
- L'Indomptable: Laid down at Marseilles January 1933, completed December 1933
- Le Triomphant: Laid down at Beirut January 1933, completed December 1933
- Mogador: Laid down at La Rochelle January 1934, completed December 1934
- Hoche: Laid down at La Rochelle January 1934, completed December 1934
- Desaix: Laid down at La Rochelle January 1934, completed December 1934
- Marceaux: Laid down at La Rochelle January 1934, completed December 1934

Jaguar class Destroyers
- Jaguar (1936)
- Chacal (1936)
- Lion (1936)
- Guépard (1936)
- Leopard (1937)
- Lynx (1937)
- Panthère (1937)
- Tigre (1937)
- Aigle (1938)
- Vautour (1938)
- Albatros (1938)
- Gerfaut (1938)
- Milan (1938)
- Épervier (1938)
- Bison (1938)
- Valmy (1938)
Sabre subclass
- Sabre (1941)
- Baliste (1941)
- Dehorter (1941)
- Javeline (1941)
- Bouclier (1941)
- Rapière (1941)
- Sagaie (1941)
- Casque (1941)
Cimeterre subclass
- Cimeterre: Laid down at Marseilles January 1942, completed December 1942
- Dague: Laid down at Marseilles January 1942, completed December 1942
- Cognée: Laid down at Marseilles January 1942, completed December 1942
- Arquebuse: Laid down at Marseilles January 1942, completed December 1942
- Glaive: Laid down at Marseilles July 1942, completed June 1943
- Poignard: Laid down at Marseilles July 1942, completed June 1943
- Pique: Laid down at Marseilles July 1942, completed June 1943
- Épieu: Laid down at Marseilles July 1942, completed June 1943
Barfleur subclass
- Barfleur: Laid down at La Rochelle January 1942, completed December 1942
- La Rochelle: Laid down at La Rochelle January 1942, completed December 1942
- Cap Lézard: Laid down at La Rochelle January 1942, completed December 1942
- Baie de Chesapeake: Laid down at La Rochelle January 1942, completed December 1942
- Navarin: Laid down at La Rochelle July 1942, completed June 1943
- Fou-Tchéou: Laid down at La Rochelle July 1942, completed June 1943
- Grand Port: Laid down at La Rochelle July 1942, completed June 1943
- Bévéziers: Laid down at La Rochelle July 1942, completed June 1943
Étendard subclass
- Étendard: Laid down at La Rochelle January 1943, completed December 1943
- Flamberge: Laid down at La Rochelle January 1943, completed December 1943
- Hallebarde: Laid down at La Rochelle January 1943, completed December 1943
- Harpon: Laid down at La Rochelle January 1943, completed December 1943
- Claymore: Laid down at La Rochelle July 1943, completed June 1944
- Carabine: Laid down at La Rochelle July 1943, completed June 1944
- Épée: Laid down at La Rochelle July 1943, completed June 1944
- Trident: Laid down at La Rochelle July 1943, completed June 1944

Surcouf class Destroyers
- Surcouf: Laid down at La Rochelle January 1941, completed December 1941
- Kersaint: Laid down at La Rochelle January 1941, completed December 1941
- Cassard: Laid down at La Rochelle January 1941, completed December 1941
- Bouvet: Laid down at La Rochelle January 1941, completed December 1941

Forbin class Destroyers
Forbin Subclass
- Forbin (D626): Laid down at La Rochelle January 1943, completed December 1943
- Dupetit-Thouars (D627): Laid down at La Rochelle March 1943, completed February 1944
- Chevalier Paul (D628): Laid down at La Rochelle May 1943, completed April 1944
- Vauquelin (D629): Laid down at La Rochelle July 1943, completed June 1944
- D'Estrées (D630): Laid down at La Rochelle September 1943, completed August 1944
- d'Estaing (D631): Laid down at La Rochelle November 1943, completed October 1944
- Guépratte (D632): Laid down at La Rochelle January 1944, completed December 1944
- Duperré (D633): Laid down at La Rochelle March 1944, completed February 1945
Inflexible Subclass
- L'Inflexible (D628): Laid down at La Rochelle May 1944, completed April 1945
- L'Inébranlable (D629): Laid down at La Rochelle July 1944, completed June 1945
- L'Infatigable (D630): Laid down at La Rochelle September 1944, completed August 1945
- L'Implacable (D631): Laid down at La Rochelle November 1944, completed October 1945
Maillé-Brézé Subclass
- Maillé-Brézé (D630): Laid down at La Rochelle January 1945, completed December 1945
- La Bourdonnais (D631): Laid down at La Rochelle March 1945, completed February 1946
- Jurien (D632): Laid down at La Rochelle May 1945, completed April 1946
- Tartu (D633): Laid down at La Rochelle July 1945, completed June 1946
- de Sercey (D634): Laid down at La Rochelle September 1945, completed August 1946
- Allemand (D635): Laid down at La Rochelle November 1945, completed October 1946
- Cosmao (D636): Laid down at La Rochelle January 1946, completed December 1946
- La Gravière (D637): Laid down at La Rochelle March 1946, completed February 1947

2

Thursday, February 24th 2011, 4:45am

Le Fantasque and Mogador class, French Contre-Torpillieurs laid down 1933, Refitted 1942

Displacement:
2,852 t light; 2,999 t standard; 3,449 t normal; 3,809 t full load

Dimensions: Length overall / water x beam x draught
457.68 ft / 457.68 ft x 40.68 ft x 17.06 ft (normal load)
139.50 m / 139.50 m x 12.40 m x 5.20 m

Armament:
6 - 5.43" / 138 mm guns (3x2 guns), 89.51lbs / 40.60kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mount
on side amidships, all raised guns
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
6 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1933 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 553 lbs / 251 kg
Shells per gun, main battery: 250
12 - 21.7" / 550 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.50" / 13 mm 457.68 ft / 139.50 m 8.20 ft / 2.50 m
Ends: Unarmoured
Main Belt covers 154 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm -
2nd: 0.98" / 25 mm 0.20" / 5 mm -
3rd: 0.98" / 25 mm 0.20" / 5 mm -

- Conning tower: 2.36" / 60 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 62,419 shp / 46,565 Kw = 36.00 kts
Range 4,700nm at 18.00 kts
Bunker at max displacement = 810 tons

Complement:
224 - 292

Cost:
£1.841 million / $7.363 million

Distribution of weights at normal displacement:
Armament: 62 tons, 1.8 %
Armour: 113 tons, 3.3 %
- Belts: 69 tons, 2.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 32 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 12 tons, 0.3 %
Machinery: 1,696 tons, 49.2 %
Hull, fittings & equipment: 906 tons, 26.3 %
Fuel, ammunition & stores: 597 tons, 17.3 %
Miscellaneous weights: 75 tons, 2.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
784 lbs / 355 Kg = 9.8 x 5.4 " / 138 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.8 ft / 0.6 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.380
Length to Beam Ratio: 11.25 : 1
'Natural speed' for length: 24.58 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.53 ft / 9.00 m
- Forecastle (25 %): 19.69 ft / 6.00 m
- Mid (49 %): 19.69 ft / 6.00 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 15.65 ft / 4.77 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 176.0 %
- Above water (accommodation/working, high = better): 72.8 %
Waterplane Area: 11,779 Square feet or 1,094 Square metres
Displacement factor (Displacement / loading): 80 %
Structure weight / hull surface area: 42 lbs/sq ft or 204 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.18
- Overall: 0.55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Breakdown of Miscellaneous Weights:
- 5 tons for hydrophones and ASW detection gear
- 15 tons for depth charges (70x420-lb bombs) or mines (16x2000-lb mines)
- 25 tons for twelve 42G reload torpedoes
- 30 tons for Type 41 electronics suite
Total miscellaneous weight: 75 tons

Ships in Class:
- Le Fantasque (1933, refitted 1942)
- Le Malin (1933, refitted 1942)
- L'Indomptable (1933, refitted 1942)
- Le Triomphant (1933, refitted 1942)
- Mogador (1933, refitted 1942)
- Hoche (1933, refitted 1942)
- Desaix (1933, refitted 1942)
- Marceaux (1933, refitted 1942)

Refit Notes:
The most immediate change is the slimming of the 25mm external armoured belts, which drop down to 12.7mm. This should be regarded as armour-quality hull materials rather than a true armoured belt, intended to stop splinters and little else. The 138mm guns are additionally rebuilt using a later version of the mount, which offers higher firing angles (up to 70 degrees) for antiaircraft use, provides a newer, more robust and reliable power-train and elevation system, improves interior gunhouse working space, replaces the insufficiently-powerful rammer, and gives automated gunlaying capabilities (as is standard on the current range of French ships). The gun barrels from the 1933 guns will be reused. Additionally, the 1933 40mm guns are simultaneously replaced with new-model 40mm guns.

As part of the installation of the electronics suite, some internal fittings will be refurbished, replaced, or modified to free up space and generally make the ship more liveable. New sonar is also be added.

* * * * *


Le Fantasque, French Contre-Torpillieurs laid down 1933

Displacement:
2,867 t light; 2,999 t standard; 3,449 t normal; 3,809 t full load

Dimensions: Length overall / water x beam x draught
468.42 ft / 457.68 ft x 40.68 ft x 17.06 ft (normal load)
142.78 m / 139.50 m x 12.40 m x 5.20 m

Armament:
6 - 5.43" / 138 mm guns (3x2 guns), 89.51lbs / 40.60kg shells, 1933 Model
Quick firing guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.89kg shells, 1933 Model
Anti-aircraft guns in a deck mount with hoist
on centreline aft, all raised guns - superfiring
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1933 Model
Anti-aircraft guns in deck mounts with hoists
on side, all amidships
6 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1933 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 553 lbs / 251 kg
Shells per gun, main battery: 200
12 - 21.7" / 550 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.98" / 25 mm 457.68 ft / 139.50 m 8.20 ft / 2.50 m
Ends: Unarmoured
Main Belt covers 154 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm -
2nd: 0.98" / 25 mm 0.20" / 5 mm -
3rd: 0.98" / 25 mm 0.20" / 5 mm -

- Conning tower: 2.36" / 60 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 62,419 shp / 46,565 Kw = 36.00 kts
Range 4,700nm at 18.00 kts
Bunker at max displacement = 810 tons

Complement:
224 - 292

Cost:
£1.841 million / $7.365 million

Distribution of weights at normal displacement:
Armament: 62 tons, 1.8 %
Armour: 180 tons, 5.2 %
- Belts: 137 tons, 4.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 32 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 12 tons, 0.3 %
Machinery: 1,692 tons, 49.1 %
Hull, fittings & equipment: 898 tons, 26.0 %
Fuel, ammunition & stores: 581 tons, 16.9 %
Miscellaneous weights: 35 tons, 1.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
796 lbs / 361 Kg = 9.9 x 5.4 " / 138 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 1.9 ft / 0.6 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.380
Length to Beam Ratio: 11.25 : 1
'Natural speed' for length: 24.58 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 69
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.53 ft / 9.00 m
- Forecastle (25 %): 19.69 ft / 6.00 m
- Mid (49 %): 19.69 ft / 6.00 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 10.83 ft / 3.30 m
- Average freeboard: 15.72 ft / 4.79 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.0 %
- Above water (accommodation/working, high = better): 72.8 %
Waterplane Area: 11,779 Square feet or 1,094 Square metres
Displacement factor (Displacement / loading): 79 %
Structure weight / hull surface area: 41 lbs/sq ft or 201 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.18
- Overall: 0.54
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Ships in Class:
- Le Fantasque: Laid down at La Rochelle January 1933, completed December 1933
- Le Malin: Laid down at La Rochelle January 1933, completed December 1933
- L'Indomptable: Laid down at Marseilles January 1933, completed December 1933
- Le Triomphant: Laid down at Beirut January 1933, completed December 1933
- Mogador: Laid down at La Rochelle January 1934, completed December 1934
- Hoche: Laid down at La Rochelle January 1934, completed December 1934
- Desaix: Laid down at La Rochelle January 1934, completed December 1934
- Marceaux: Laid down at La Rochelle January 1934, completed December 1934

3

Thursday, February 24th 2011, 4:45am

Jaguar (T36 / Beast) class, French Contre-Torpillieur laid down 1936

The Jaguar class contre-torpillieurs were the genesis of one of the most numerous and successful modern warship classes ever constructed in France. The Jaguars, also called the T36 or Beast class destroyers, were the first sixteen vessels of the group, laid down between 1936 and 1938. Traditionally, the Marine Nationale had adopted a two-pronged approach to fast light warships. On the smallest end of the scale were the torpillieurs d'escadre (fleet torpedo boats), small fast ships with a comparatively light gun armament, designed for fleet escort duties. On the larger end of the scale were the large, powerfully-armed contretorpillieurs (such as the Roland, Le Fantasque, and Mogador classes) which were designed for surface action. Both types were referred to as "destroyers" in foreign press, but their purposes were different. As the Marine Nationale adopted a more oceanic strategy in the 1930s, it became clear that the small, short-ranged torpillieurs d'escadre was not a suitable blue-water escort. The Jaguars were designed to fill the gap, providing anti-aircraft and anti-submarine protection to capital ships on the high seas. As a result of their intended mission, they represented a bridge between the smaller torpillieurs d'escadre and the larger contretorpillieurs. Four ships were ordered in 1936, and four more in 1937. The first examples of the design proved extremely successful in trials, being fast, comfortable, well-armed ships. The Marine Nationale immediately ordered eight more vessels for construction in 1938. The first set of eight ships was named for cats, and six of the trailing octet were named for birds of prey.

The sixteen ships of the Jaguar class proved so effective that between 1938 and 1940, a modified version called the "T36 Longue" was designed, using the lessons learned in the construction and design of the original Jaguars. Three meters longer, with more range, and designed to carry the new teledetector electronic arrays, eight ships were laid down in 1941, becoming the Sabre or T41 subclass. Further design modifications continued through 1941, with the three dual 120mm guns being replaced by the outstanding dual 100mm mounting. Although a smaller weapon, this gun had a high rate-of-fire and worked better in the anti-aircraft role. In 1942, two more octets of destroyers were ordered. The more conventional Cimeterre subclass, built in Marseilles, strongly resembled the preceding Sabre subclass in most respects, but the La Rochelle-built ships, the Barfleur subclass, was constructed using prefabricated sections, and with the addition of a split power plant. Alsthom cruising diesels could be used economically at speeds up to eighteen knots, with steam turbines boosting the ship up to full speed when required. The cost savings from the new prefabricated construction methods proved to be substantial, and the Barfleur design was repeated for a further octet of ships laid down in 1943, the Etendard group. With the order of the Étendard class, a total of forty-eight vessels had been built to the basic design of the original Jaguar class destroyers.

In 1943 and 1944, all sixteen ships received a light refit to install radio-teledecteur equipment and update the ASDIC equipment.

Displacement:
2,000 t light; 2,104 t standard; 2,343 t normal; 2,533 t full load

Dimensions: Length overall / water x beam x draught
392.81 ft / 383.86 ft x 36.09 ft x 13.45 ft (normal load)
119.73 m / 117.00 m x 11.00 m x 4.10 m

Armament:
6 - 4.72" / 120 mm guns (3x2 guns), 61.73lbs / 28.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.88kg shells, 1936 Model
Anti-aircraft guns in a deck mount with hoist
on side amidships, all raised guns
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.88kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 394 lbs / 179 kg
Shells per gun, main battery: 250
8 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.20" / 5 mm -
2nd: 0.98" / 25 mm 0.20" / 5 mm -
3rd: 0.98" / 25 mm 0.20" / 5 mm -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 49,350 shp / 36,815 Kw = 35.00 kts
Range 3,200nm at 18.00 kts
Bunker at max displacement = 429 tons

Complement:
167 - 218

Cost:
£1.427 million / $5.707 million

Distribution of weights at normal displacement:
Armament: 43 tons, 1.8 %
Armour: 17 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 12 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 1,178 tons, 50.3 %
Hull, fittings & equipment: 713 tons, 30.4 %
Fuel, ammunition & stores: 342 tons, 14.6 %
Miscellaneous weights: 50 tons, 2.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
660 lbs / 299 Kg = 12.5 x 4.7 " / 120 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.34
Metacentric height 1.8 ft / 0.6 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 10.64 : 1
'Natural speed' for length: 22.42 kts
Power going to wave formation at top speed: 68 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.61 ft / 7.50 m
- Forecastle (20 %): 20.67 ft / 6.30 m
- Mid (50 %): 20.67 ft / 6.30 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 12.47 ft / 3.80 m
- Average freeboard: 16.46 ft / 5.02 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 179.8 %
- Above water (accommodation/working, high = better): 94.2 %
Waterplane Area: 9,104 Square feet or 846 Square metres
Displacement factor (Displacement / loading): 74 %
Structure weight / hull surface area: 39 lbs/sq ft or 189 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.07
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

Breakdown of Miscellaneous Weights:
Asdic - 10 tons
Depth charges - 30 tons

* * * * *


Jaguar, French Destroyer laid down 1936
1943-1944 Light Refit

Displacement:
2,000 t light; 2,104 t standard; 2,343 t normal; 2,533 t full load

Dimensions: Length overall / water x beam x draught
396.10 ft / 383.86 ft x 36.09 ft x 13.45 ft (normal load)
120.73 m / 117.00 m x 11.00 m x 4.10 m

Armament:
6 - 4.72" / 120 mm guns (3x2 guns), 61.73lbs / 28.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.88kg shells, 1936 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.88kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 394 lbs / 179 kg
Shells per gun, main battery: 250
8 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.20" / 5 mm -
2nd: 0.98" / 25 mm 0.20" / 5 mm -
3rd: 0.98" / 25 mm 0.20" / 5 mm -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 49,350 shp / 36,815 Kw = 35.00 kts
Range 3,200nm at 18.00 kts
Bunker at max displacement = 429 tons

Complement:
167 - 218

Cost:
£1.425 million / $5.702 million

Distribution of weights at normal displacement:
Armament: 43 tons, 1.8 %
Armour: 17 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 12 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 1,176 tons, 50.2 %
Hull, fittings & equipment: 705 tons, 30.1 %
Fuel, ammunition & stores: 342 tons, 14.6 %
Miscellaneous weights: 60 tons, 2.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
661 lbs / 300 Kg = 12.5 x 4.7 " / 120 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.35
Metacentric height 1.8 ft / 0.6 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.48
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 10.64 : 1
'Natural speed' for length: 22.42 kts
Power going to wave formation at top speed: 68 %
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: 24.61 ft / 7.50 m
- Forecastle (20 %): 20.67 ft / 6.30 m
- Mid (50 %): 20.67 ft / 6.30 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 12.47 ft / 3.80 m
- Average freeboard: 16.46 ft / 5.02 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 180.0 %
- Above water (accommodation/working, high = better): 94.2 %
Waterplane Area: 9,104 Square feet or 846 Square metres
Displacement factor (Displacement / loading): 74 %
Structure weight / hull surface area: 38 lbs/sq ft or 187 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.06
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

Breakdown of Miscellaneous Weights:
- 45 tons for electronics
- 15 tons for depth charges (56x573-lb bombs)

Electronics:
- DRBV-9 surface and air search radars (2 radars, 15 tons)
- DRBN-1 navigational surface and air search radar (1 radar, 2 tons)
- DRBC-3B fire-control radar (2 radars, 8 tons)
- DRBI-2R height-finding radar (1 radar, 2 tons)
- SAGEM HF/DF (3 tons)
- ASDIC (8 tons)
- Diesel electric generator set (5 tons)
- Gunnery Computer for 120mm and 40mm guns (2 tons)

Ships in Class:
- Jaguar: Laid down at La Rochelle January 1936, completed December 1936, refitted October 1943
- Chacal: Laid down at La Rochelle January 1936, completed December 1936, refitted October 1943
- Lion: Laid down at La Rochelle January 1936, completed December 1936, refitted October 1943
- Guépard: Laid down at La Rochelle January 1936, completed December 1936, refitted October 1943
- Leopard: Laid down at La Rochelle January 1937, completed December 1937
- Lynx: Laid down at La Rochelle January 1937, completed December 1937
- Panthère: Laid down at La Rochelle January 1937, completed December 1937
- Tigre: Laid down at La Rochelle January 1937, completed December 1937
- Aigle: Laid down at La Rochelle January 1938, completed December 1938
- Vautour: Laid down at La Rochelle January 1938, completed December 1938
- Albatros: Laid down at La Rochelle January 1938, completed December 1938
- Gerfaut: Laid down at La Rochelle January 1938, completed December 1938
- Milan: Laid down at La Rochelle January 1938, completed December 1938
- Épervier: Laid down at La Rochelle January 1938, completed December 1938
- Bison: Laid down at Marseilles January 1938, completed December 1938
- Valmy: Laid down at Marseilles January 1938, completed December 1938

4

Saturday, July 2nd 2011, 5:54am

Sabre-class (T41 / Weapon class), French Destroyer laid down 1941

Displacement:
2,100 t light; 2,248 t standard; 2,485 t normal; 2,674 t full load

Dimensions: Length overall / water x beam x draught
409.86 ft / 393.70 ft x 36.42 ft x 13.78 ft (normal load)
124.93 m / 120.00 m x 11.10 m x 4.20 m

Armament:
6 - 4.72" / 120 mm guns (3x2 guns), 61.73lbs / 28.00kg shells, 1941 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.88kg shells, 1941 Model
Breech loading guns in deck mount
on side amidships, all raised guns
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.88kg shells, 1941 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 394 lbs / 179 kg
Shells per gun, main battery: 435
8 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm 0.39" / 10 mm
2nd: 0.98" / 25 mm - -
3rd: 0.98" / 25 mm - -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 50,542 shp / 37,704 Kw = 35.00 kts
Range 3,200nm at 18.00 kts
Bunker at max displacement = 426 tons

Complement:
175 - 228

Cost:
£1.706 million / $6.824 million

Distribution of weights at normal displacement:
Armament: 42 tons, 1.7 %
Armour: 22 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 18 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.2 %
Machinery: 1,191 tons, 47.9 %
Hull, fittings & equipment: 758 tons, 30.5 %
Fuel, ammunition & stores: 385 tons, 15.5 %
Miscellaneous weights: 85 tons, 3.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
717 lbs / 325 Kg = 13.6 x 4.7 " / 120 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 1.5 ft / 0.5 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.62
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 10.81 : 1
'Natural speed' for length: 22.67 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.31 ft / 6.80 m
- Forecastle (20 %): 21.33 ft / 6.50 m
- Mid (50 %): 20.34 ft / 6.20 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 17.16 ft / 5.23 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.7 %
- Above water (accommodation/working, high = better): 101.2 %
Waterplane Area: 9,424 Square feet or 876 Square metres
Displacement factor (Displacement / loading): 80 %
Structure weight / hull surface area: 39 lbs/sq ft or 188 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.23
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform

Breakdown of Miscellaneous Weights:
- 45 tons for electronics
- 17 tons for eight reload torpedoes
- 12 tons for depth charges (56x420-lb bombs)
- 10 tons for HVAC

Electronics:
- DRBV-9 surface and air search radars (2 radars, 15 tons)
- DRBN-1 navigational surface and air search radar (1 radar, 2 tons)
- DRBC-3B fire-control radar (2 radars, 8 tons)
- DRBI-2R height-finding radar (1 radar, 2 tons)
- SAGEM HF/DF (3 tons)
- ASDIC (8 tons)
- Diesel electric generator set (5 tons)
- Gunnery Computer for 120mm and 40mm guns (2 tons)

Ships in Class:
- Sabre: Laid down at La Rochelle January 1941, completed December 1941
- Baliste: Laid down at La Rochelle January 1941, completed December 1941
- Dehorter: Laid down at Marseilles January 1941, completed December 1941
- Javeline: Laid down at Marseilles January 1941, completed December 1941
- Bouclier: Laid down at Marseilles June 1941, completed May 1942
- Rapière: Laid down at Marseilles June 1941, completed May 1942
- Sagaie: Laid down at Brest June 1941, completed May 1942
- Casque: Laid down at Brest June 1941, completed May 1942

5

Saturday, July 2nd 2011, 5:59am



Surcouf-class (T40 / Heroes), French Contre-Torpillieurs laid down 1941
The Surcouf or T40 class contretorpillieurs were designed as follow-on ships to the Le Fantasque and Mogador class ships. Heavily-armed and idealized for surface-action, the four Surcouf class ships composed the escorts for the Force de Raid, composed around the battlecruisers Dunkerque and Strasbourg.

Displacement:
2,669 t light; 2,820 t standard; 3,218 t normal; 3,536 t full load

Dimensions: Length overall / water x beam x draught
442.91 ft / 442.91 ft x 41.01 ft x 14.76 ft (normal load)
135.00 m / 135.00 m x 12.50 m x 4.50 m

Armament:
6 - 5.43" / 138 mm guns (3x2 guns), 80.19lbs / 36.37kg shells, 1941 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.89kg shells, 1941 Model
Anti-aircraft guns in deck mount
on side amidships, all raised guns
8 - 1.57" / 40.0 mm guns (2x4 guns), 1.95lbs / 0.89kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
6 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1941 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 505 lbs / 229 kg
Shells per gun, main battery: 300
12 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm 0.98" / 25 mm
2nd: 0.98" / 25 mm 0.79" / 20 mm -
3rd: 0.98" / 25 mm 0.79" / 20 mm -

- Conning tower: 2.36" / 60 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 62,182 shp / 46,388 Kw = 36.00 kts
Range 4,700nm at 18.00 kts
Bunker at max displacement = 716 tons

Complement:
213 - 277

Cost:
£2.282 million / $9.126 million

Distribution of weights at normal displacement:
Armament: 75 tons, 2.3 %
Armour: 47 tons, 1.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 36 tons, 1.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 11 tons, 0.3 %
Machinery: 1,518 tons, 47.2 %
Hull, fittings & equipment: 944 tons, 29.3 %
Fuel, ammunition & stores: 549 tons, 17.1 %
Miscellaneous weights: 85 tons, 2.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
857 lbs / 389 Kg = 10.7 x 5.4 " / 138 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.8 ft / 0.6 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.09

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.420
Length to Beam Ratio: 10.80 : 1
'Natural speed' for length: 24.12 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 64
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.53 ft / 9.00 m
- Forecastle (25 %): 24.61 ft / 7.50 m
- Mid (49 %): 19.69 ft / 6.00 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 17.81 ft / 5.43 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.3 %
- Above water (accommodation/working, high = better): 85.4 %
Waterplane Area: 11,756 Square feet or 1,092 Square metres
Displacement factor (Displacement / loading): 80 %
Structure weight / hull surface area: 41 lbs/sq ft or 202 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.61
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Breakdown of Miscellaneous Weights:
- 45 tons for Suite-40 Teledetection System
- 25 tons for twelve 550mm reload torpedoes
- 15 tons for other electronics and crew comforts

Electronics:
- DRBV-9 surface and air search radars (2 radars, 15 tons)
- DRBN-1 navigational surface and air search radar (1 radar, 2 tons)
- DRBC-3B fire-control radar (2 radars, 8 tons)
- DRBI-2R height-finding radar (1 radar, 2 tons)
- SAGEM HF/DF (3 tons)
- ASDIC (8 tons)
- Diesel electric generator set (5 tons)
- Gunnery Computer for 138mm and 40mm guns (2 tons)

Ships in Class:
- Surcouf: Laid down at La Rochelle January 1941, completed December 1941
- Kersaint: Laid down at La Rochelle January 1941, completed December 1941
- Cassard: Laid down at La Rochelle January 1941, completed December 1941
- Bouvet: Laid down at La Rochelle January 1941, completed December 1941

6

Wednesday, March 14th 2012, 3:10pm

Saber / T41-class, Cimeterre / T41B subclass, French Destroyer laid down 1942
Originally ordered as Sabre class destroyers, these ships were redesigned to carry the twin 100mm dual-purpose SA gun rather than the 120mm twin of the original Sabres. The eight ships of the Barfleur group were all built using prefabricated sections; this prompted the use of Alstom marine turbodiesels to provide cruising power, which resulted in a slightly different machinery layout and a different funnel profile; these construction techniques, as well as the use of the cruising diesel, were replicated on later classes. The ships of the Barfleur and Étendard groups were built in La Rochelle while the ships of the Cimeterre group were built in Marseilles.

Displacement:
2,100 t light; 2,236 t standard; 2,485 t normal; 2,684 t full load

Dimensions: Length overall / water x beam x draught
409.86 ft / 393.70 ft x 36.42 ft x 13.78 ft (normal load)
124.93 m / 120.00 m x 11.10 m x 4.20 m

Armament:
6 - 3.94" / 100 mm guns (3x2 guns), 35.27lbs / 16.00kg shells, 1942 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.88kg shells, 1942 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.88kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
4 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 235 lbs / 107 kg
Shells per gun, main battery: 625
8 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm 0.39" / 10 mm
2nd: 0.98" / 25 mm - -
3rd: 0.98" / 25 mm - -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Geared drive, 2 shafts, 50,532 shp / 37,697 Kw = 35.00 kts
Range 3,400nm at 18.00 kts
Bunker at max displacement = 447 tons

Complement:
175 - 228

Cost:
£1.676 million / $6.704 million

Distribution of weights at normal displacement:
Armament: 26 tons, 1.0 %
Armour: 17 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 12 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.2 %
Machinery: 1,201 tons, 48.3 %
Hull, fittings & equipment: 721 tons, 29.0 %
Fuel, ammunition & stores: 385 tons, 15.5 %
Miscellaneous weights: 135 tons, 5.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
739 lbs / 335 Kg = 24.2 x 3.9 " / 100 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.5 ft / 0.5 m
Roll period: 12.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.37
Seaboat quality (Average = 1.00): 1.13

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.440
Length to Beam Ratio: 10.81 : 1
'Natural speed' for length: 22.67 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.31 ft / 6.80 m
- Forecastle (20 %): 21.33 ft / 6.50 m
- Mid (50 %): 20.34 ft / 6.20 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 17.16 ft / 5.23 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 173.0 %
- Above water (accommodation/working, high = better): 101.2 %
Waterplane Area: 9,424 Square feet or 876 Square metres
Displacement factor (Displacement / loading): 83 %
Structure weight / hull surface area: 37 lbs/sq ft or 179 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.18
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform

Breakdown of Miscellaneous Weights:
- 45 tons for electronics
- 17 tons for eight reload torpedoes
- 15 tons for depth charges (56x573-lb bombs)
- 10 tons for HVAC
- 23 tons for crew comforts
- 25 tons for Lance roquettes anti-sous-marin de 265mm modèle 1942
135 tons total miscellaneous weight

Electronics:
- DRBV-9 surface and air search radars (2 radars, 15 tons)
- DRBN-1 navigational surface and air search radar (1 radar, 2 tons)
- DRBC-3B fire-control radar (2 radars, 8 tons)
- DRBI-2R height-finding radar (1 radar, 2 tons)
- SAGEM HF/DF (3 tons)
- ASDIC (8 tons)
- Diesel electric generator set (5 tons)
- Gunnery Computer for 100mm and 40mm guns (2 tons)

Ships in Class:
Cimeterre Group
- Cimeterre: Laid down at Marseilles January 1942, completed December 1942
- Dague: Laid down at Marseilles January 1942, completed December 1942
- Cognée: Laid down at Marseilles January 1942, completed December 1942
- Arquebuse: Laid down at Marseilles January 1942, completed December 1942
- Glaive: Laid down at Marseilles July 1942, completed June 1943
- Poignard: Laid down at Marseilles July 1942, completed June 1943
- Pique: Laid down at Marseilles July 1942, completed June 1943
- Épieu: Laid down at Marseilles July 1942, completed June 1943

Barfleur Group
- Barfleur: Laid down at La Rochelle January 1942, completed December 1942
- La Rochelle: Laid down at La Rochelle January 1942, completed December 1942
- Cap Lézard: Laid down at La Rochelle January 1942, completed December 1942
- Baie de Chesapeake: Laid down at La Rochelle January 1942, completed December 1942
- Navarin: Laid down at La Rochelle July 1942, completed June 1943
- Fou-Tchéou: Laid down at La Rochelle July 1942, completed June 1943
- Grand Port: Laid down at La Rochelle July 1942, completed June 1943
- Bévéziers: Laid down at La Rochelle July 1942, completed June 1943

Étendard Group
- Étendard: Laid down at La Rochelle January 1943, completed December 1943
- Flamberge: Laid down at La Rochelle January 1943, completed December 1943
- Hallebarde: Laid down at La Rochelle January 1943, completed December 1943
- Harpon: Laid down at La Rochelle January 1943, completed December 1943
- Claymore: Laid down at La Rochelle July 1943, completed June 1944
- Carabine: Laid down at La Rochelle July 1943, completed June 1944
- Épée: Laid down at La Rochelle July 1943, completed June 1944
- Trident: Laid down at La Rochelle July 1943, completed June 1944

Notes:

7

Sunday, November 4th 2012, 2:45am


The Forbin photographed during a visit to Norfolk, 1944.

Forbin (T43) class, French Destroyer laid down 1943
The Forbin class was designed as a follow-on vessel to the 138mm-armed Surcoufs, which were constructed in 1941. Although the Marine Nationale had enthusiastically embraced the Sabre-class destroyer, laying down thirty-two between 1941 and 1943, this class, with its 100mm armament, was seen as a good general fleet escort, rather than a dedicated surface combatant like the Roland, Le Fantasque, Mogador, and Surcouf classes. Many senior officers pushed for antisubmarine duties to be removed from the destroyer's repertoire and assigned to a more specialized antisubmarine ship, the escortier rapide. The true contre-torpillieur would thus evolve into a dedicated surface combatant, concentrating on antisubmarine work only so far as necessary.

With a successful escortier rapide design available with the Le Breton, the Marine Nationale adopted this doctrine, although the Forbin class retained two potent antisubmarine weapons - the LR-265 antisubmarine rocket launcher, and the six forward 55cm torpedo tubes, which were intended to launch acoustic antisubmarine torpedoes. This resulted in the elimination of the ship's depth charges.

Displacement:
2,500 t light; 2,726 t standard; 3,134 t normal; 3,460 t full load

Dimensions: Length overall / water x beam x draught
433.21 ft / 419.95 ft x 41.67 ft x 14.27 ft (normal load)
132.04 m / 128.00 m x 12.70 m x 4.35 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 79.37lbs / 36.00kg shells, 1943 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
2 - 2.24" / 57.0 mm guns (1x2 guns), 6.61lbs / 3.00kg shells, 1943 Model
Automatic rapid fire guns in a deck mount with hoist
on centreline aft, all raised guns - superfiring
4 - 2.24" / 57.0 mm guns (2x2 guns), 6.61lbs / 3.00kg shells, 1943 Model
Breech loading guns in deck mounts with hoists
on side, all aft, all raised mounts - superfiring
4 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1943 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 516 lbs / 234 kg
Shells per gun, main battery: 550
12 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.59" / 15 mm 0.20" / 5 mm 0.20" / 5 mm
3rd: 0.59" / 15 mm 0.20" / 5 mm 0.20" / 5 mm
4th: 0.39" / 10 mm - -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Geared drive, 2 shafts, 50,381 shp / 37,584 Kw = 34.00 kts
Range 5,000nm at 18.00 kts
Bunker at max displacement = 734 tons

Complement:
209 - 272

Cost:
£2.094 million / $8.376 million

Distribution of weights at normal displacement:
Armament: 65 tons, 2.1 %
Armour: 28 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 23 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.2 %
Machinery: 1,271 tons, 40.5 %
Hull, fittings & equipment: 947 tons, 30.2 %
Fuel, ammunition & stores: 634 tons, 20.2 %
Miscellaneous weights: 190 tons, 6.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,132 lbs / 513 Kg = 16.9 x 5.1 " / 130 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 1.8 ft / 0.6 m
Roll period: 12.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.59
Seaboat quality (Average = 1.00): 1.17

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.439
Length to Beam Ratio: 10.08 : 1
'Natural speed' for length: 23.55 kts
Power going to wave formation at top speed: 65 %
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 (% = measuring location as a percentage of overall length):
- Stem: 22.97 ft / 7.00 m
- Forecastle (20 %): 22.15 ft / 6.75 m
- Mid (50 %): 21.33 ft / 6.50 m (14.44 ft / 4.40 m aft of break)
- Quarterdeck (15 %): 14.44 ft / 4.40 m
- Stern: 14.44 ft / 4.40 m
- Average freeboard: 18.23 ft / 5.56 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 157.6 %
- Above water (accommodation/working, high = better): 124.0 %
Waterplane Area: 11,492 Square feet or 1,068 Square metres
Displacement factor (Displacement / loading): 94 %
Structure weight / hull surface area: 43 lbs/sq ft or 209 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.92
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Breakdown of Miscellaneous Weights:
- 45 tons for electronics
- 17 tons for six 42G reload torpedoes
- 13 tons for HVAC
- 25 tons for Lance roquettes anti-sous-marin de 265mm modèle 1942 (Forbin, Inflexible, and Maillé-Brézé subclasses) or Lance roquettes anti-sous-marin de 320 modèle 1947 (Dumont d'Urville subclass)
- 90 tons remaining for crew comforts and growth
190 tons total miscellaneous weight

Electronics (Forbin subclass):
- DRBV-9 surface and air search radars (2 radars, 15 tons)
- DRBN-1 navigational surface and air search radar (1 radar, 2 tons)
- DRBC-3B fire-control radar (2 radars, 8 tons)
- DRBI-2R height-finding radar (1 radar, 2 tons)
- SAGEM HF/DF (3 tons)
- ASDIC (8 tons)
- Diesel electric generator set (5 tons)
- Gunnery Computer for 130mm and 57mm guns (2 tons)

Electronics (Inflexible, Maillé-Brézé, and Dumont d'Urville subclasses):
- DRBV-9 surface and air search radar (1 radar, 7.5 tons)
- DRBI-3 sentry radar (1 radar, 7.5 tons)
- DRBN-1 navigational surface and air search radar (1 radar, 2 tons)
- DRBC-3B fire-control radar (2 radars, 8 tons)
- ARBR-1 radar jammer/detector (2 units, 2 tons)
- SAGEM HF/DF (3 tons)
- ASDIC (8 tons)
- Diesel electric generator set (5 tons)
- Gunnery Computer for 130mm and 57mm guns (2 tons)

Ships in Class:
Forbin Subclass
- Forbin (D626): Laid down at La Rochelle January 1943, completed December 1943
- Dupetit-Thouars (D627): Laid down at La Rochelle March 1943, completed February 1944
- Chevalier Paul (D628): Laid down at La Rochelle May 1943, completed April 1944
- Vauquelin (D629): Laid down at La Rochelle July 1943, completed June 1944
- D'Estrées (D630): Laid down at La Rochelle September 1943, completed August 1944
- d'Estaing (D631): Laid down at La Rochelle November 1943, completed October 1944
- Guépratte (D632): Laid down at La Rochelle January 1944, completed December 1944
- Duperré (D633): Laid down at La Rochelle March 1944, completed February 1945
Inflexible Subclass
- L'Inflexible (D628): Laid down at La Rochelle May 1944, completed April 1945
- L'Inébranlable (D629): Laid down at La Rochelle July 1944, completed June 1945
- L'Infatigable (D630): Laid down at La Rochelle September 1944, completed August 1945
- L'Implacable (D631): Laid down at La Rochelle November 1944, completed October 1945
Maillé-Brézé Subclass
- Maillé-Brézé (D630): Laid down at La Rochelle January 1945, completed December 1945
- La Bourdonnais (D631): Laid down at La Rochelle March 1945, completed February 1946
- Jurien (D632): Laid down at La Rochelle May 1945, completed April 1946
- Tartu (D633): Laid down at La Rochelle July 1945, completed June 1946
- de Sercey (D634): Laid down at La Rochelle September 1945, completed August 1946
- Allemand (D635): Laid down at La Rochelle November 1945, completed October 1946
- Cosmao (D636): Laid down at La Rochelle January 1946, completed December 1946
- La Gravière (D637): Laid down at La Rochelle March 1946, completed February 1947
Dumont d'Urville Subclass
- Dumont d'Urville (D638): Laid down at La Rochelle May 1946, completed April 1947
- D'Entrecasteaux (D639): Laid down at La Rochelle July 1946, completed June 1947
- La Grandière (D640): Laid down at La Rochelle September 1946, completed August 1947
- D'Iberville (D641): Laid down at La Rochelle November 1946, completed October 1947
- Rigault de Genouilly (D642): Laid down at La Rochelle January 1947, completed December 1947
- Savorgnan de Brazza (D643): Laid down at La Rochelle March 1947, completed February 1948
- Le Beautemps-Beaupré (D644): Laid down at La Rochelle May 1947, completed April 1948
- La Pérouse (D645): Laid down at La Rochelle July 1947, completed June 1948

Notes:

8

Friday, May 31st 2019, 9:03pm

Poursuivante-class, French Escorteur d'escadre laid down 1948

Displacement:
3,850 t light; 4,209 t standard; 4,972 t normal; 5,583 t full load

Dimensions: Length overall / water x beam x draught
501.08 ft / 492.13 ft x 49.54 ft x 15.75 ft (normal load)
152.73 m / 150.00 m x 15.10 m x 4.80 m

Armament:
8 - 5.12" / 130 mm guns (4x2 guns), 79.37lbs / 36.00kg shells, 1948 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 2.24" / 57.0 mm guns (4x2 guns), 6.61lbs / 3.00kg shells, 1948 Model
Automatic rapid fire guns in deck mounts with hoists
on side, all amidships
8 - 0.91" / 23.0 mm guns (4x2 guns), 0.37lbs / 0.17kg shells, 1948 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 691 lbs / 313 kg
Shells per gun, main battery: 650
6 - 21.7" / 550 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.59" / 15 mm 0.20" / 5 mm 0.20" / 5 mm
3rd: 0.59" / 15 mm - -

- Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Electric motors, 2 shafts, 63,346 shp / 47,256 Kw = 34.00 kts
Range 7,500nm at 18.00 kts
Bunker at max displacement = 1,374 tons

Complement:
295 - 384

Cost:
£3.169 million / $12.675 million

Distribution of weights at normal displacement:
Armament: 88 tons, 1.8 %
Armour: 43 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 31 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 12 tons, 0.2 %
Machinery: 1,548 tons, 31.1 %
Hull, fittings & equipment: 1,786 tons, 35.9 %
Fuel, ammunition & stores: 1,122 tons, 22.6 %
Miscellaneous weights: 385 tons, 7.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,471 lbs / 1,574 Kg = 51.8 x 5.1 " / 130 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 2.3 ft / 0.7 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.45
Seaboat quality (Average = 1.00): 1.19

Hull form characteristics:
Hull has rise forward of midbreak, raised quarterdeck
and transom stern
Block coefficient: 0.453
Length to Beam Ratio: 9.93 : 1
'Natural speed' for length: 25.48 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.61 ft / 7.50 m
- Forecastle (25 %): 23.79 ft / 7.25 m
- Mid (50 %): 22.97 ft / 7.00 m (15.75 ft / 4.80 m aft of break)
- Quarterdeck (15 %): 15.75 ft / 4.80 m (15.42 ft / 4.70 m before break)
- Stern: 15.75 ft / 4.80 m
- Average freeboard: 19.69 ft / 6.00 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 127.3 %
- Above water (accommodation/working, high = better): 161.4 %
Waterplane Area: 16,199 Square feet or 1,505 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 63 lbs/sq ft or 308 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.69
- Longitudinal: 1.80
- Overall: 0.76
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Breakdown of Miscellaneous Weight:
Full breakdown not yet available. Includes:
- 80 tons for electronics
- 15 tons for two LRASM Modele 1947 2x4 32cm launchers and reloads
- 50 tons for AAW command center
- 30 tons for HVAC

Ships in Class:
- Poursuivante: Laid down at La Rochelle October 1948, completed October 1949
- Aventurier: Laid down at La Rochelle October 1948, completed October 1949