France
75 mm/35 (2.95") Model 1925 and 1928
Updated 03 March 2012
A light AA weapon used on coastal submarines.  Fired fixed rounds.

I have been unable to determine the differences between the Model years, but I suspect that they had to do with the mountings.

Actual bore length was 34.5 calibers.
WNFR_3-35_m1925_Thetis_pic.jpg

Submarine Thetis in 1938
Photograph in the collection of Henri le Masson
WNFR_3-35_m1925_sketch_pic.jpg

75 mm/34.5 Model 1928 gun in SMCA Model 1928 Mounting
Sketch in the collection of Robert Dumas
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Gun Characteristics
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Designation 75 mm/35 (2.95") Model 1925 and Model 1928
Ship Class Used On "600-tonnes" coastal submarine classes of the Loire-Simonot, Schneider-Laubeuf and Normand-Fenaux types
Saphir class mine-laying submarines
Date Of Design 1925 and 1928
Date In Service 1926
Gun Weight N/A
Gun Length oa 111 inches (2.817 m)
Bore Length 101.9 in (2.588 m)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire about 15 rounds per minute
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Ammunition
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Type Fixed
Weight of Complete Round N/A
Projectile Types and Weights HE - 13.6 lbs. (6.175 kg)
SAP - 17.6 lbs. (7.98 kg)
Bursting Charge N/A
Projectile Length N/A - Complete round 25.6 in (64.95 cm)
Propellant Charge N/A
Muzzle Velocity HE - 1,870 fps (570 mps)
SAP - 1,657 fps (505 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun
(see Note)		 N/A
Note:  SAP was intended for use against surfaced submarines.
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Range
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Elevation 13.6 lbs. (6.175 kg) HE Shell
No information available No information available
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Mount / Turret Data
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Designation Single open emplacements
   Submarines (1):  Model 1925 or Model 1928
Weight  N/A
Elevation -10 / +75 degrees
Elevation Rate N/A
Train about +150 / -150 degrees
Train Rate N/A
Gun recoil 8.7 in (22 cm)
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Data from
"Naval Weapons of World War Two" by John Campbell
"Navies of the Second World War - The French Navy" by Henri le Masson
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"The French Navy under Steam" picture essay in "United States Naval Institute Proceedings" Vol. 80, No. 7, July 1954
Page History

03 March 2012 - New datapage