Adapted from the SP 75 mm gun by shortening the barrel and given a high-elevation mounting, this AA weapon was obsolete by the start of World War II. Fired fixed rounds.
I have been unable to determine the differences between the Model years. Possibly these were slight improvements.
Designation | 75 mm/50 (2.95") Model 1922, 1924 and 1927 |
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Ship Class Used On | Bretagne, Béarn, Duquesne, Suffren 1, Jeanne D'Arc, Duguay-Trouin, Chacal (2100 tonnes) and Bourrasque (1500 tonnes) classes |
Date Of Design | 1922, 1924 and 1927 |
Date In Service | 1926 |
Gun Weight | 1.05 tons (1.07 mt) |
Gun Length oa | N/A |
Bore Length | 147.6 in (3.75 m) |
Rifling Length | N/A |
Grooves | N/A |
Lands | N/A |
Twist | N/A |
Chamber Volume | N/A |
Rate Of Fire | 8 - 15 rounds per minute 2 |
- ^Of the Suffren class, only Suffren herself carried these guns, the other members of her class carried the 90 mm/50 Model 1926.
- ^The theoretical rate of fire was 15 rounds per minute but 8 rounds per minute was the practical rate.
Type | Fixed |
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Weight of Complete Round | 26.5 lbs. (12.01 kg) |
Projectile Types and Weights 1a | HE: 13.07 lbs. (5.93 kg) Starshell: N/A |
Bursting Charge | N/A |
Projectile Length | about 12.8 in (32.5 cm) Complete round 38.1 in (96.67 cm) |
Propellant Charge | 4.81 lbs. (2.18 kg) BM5 |
Cartridge Case Type, Size and Empty Weight | 27.1 x 4.33 in (688.5 x 110 mm), 13.4 lbs. (6.08 kg) |
Muzzle Velocity | 2,789 fps (850 mps) |
Working Pressure | N/A |
Approximate Barrel Life | N/A |
Ammunition stowage per gun 2a | Duguay-Trouin: 135 rounds 3a Duquesne and Suffren: 500 rounds Jeanne D-Arc: 400 rounds 4a Bourrasque: 180 HE and 120 starshell Chacal: 150 HE and 60 starshell Others: N/A |
Elevation | Distance |
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40 degrees | 15,420 yards (14,100 m) |
AA Ceiling @ 90 degrees | about 26,250 feet (8,000 m) |
Effective AA Range | 24,600 feet (7,500 m) |
Designation |
|
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Weight | N/A |
Elevation | -10 / +90 degrees |
Elevation Rate | N/A |
Train | about +150 / -150 degrees |
Train Rate | N/A |
Gun recoil | N/A |
Loading Angle | -10 / +75 degrees |
- ^Destroyers had these guns removed during refits in the 1930s as a weight-saving measure. These were replaced by 13.2mm MGs on the Chacal class and by 37 mm Model 1925 on the Bourrasque class.
Data from:
- "Naval Weapons of World War Two" by John Campbell
- "Navies of the Second World War - The French Navy" by Henri le Masson
- "French Light Cruisers" article by Jean Guigliani and Albert Moreau in "Warships International No. 3, 2001"
- "French Cruisers: 1922 - 1954" and "French Destroyers: Torpilleurs d'Escadre & Contre-Torpilleurs 1922 - 1956" both by John Jordan and Jean Moulin
- "Battleships of World War Two," "Cruisers of World War Two" and "Destroyers of World War Two" all by M.J. Whitley
- 24 March 200
- Benchmark
- 03 March 2012
- Updated to latest template
- 28 March 2013
- Added use on destroyer classes and minor details
- 29 March 2015
- Minor additions
- 24 September 2015
- Additional information regarding use on destroyers