Canon de 138 mm Modèle 1927
|Canon de 138 mm Modèle 1927|
Scale model of the Canon de 138 mm Modèle 1927 gun on display at the Musée national de la Marine
|Place of origin||France|
|Wars||World War II|
|Weight||4,100 kilograms (9,000 lb)|
|Barrel length||about 5.544 metres (18.19 ft)|
|Shell||separate-loading, cased charge|
|Shell weight||40.6 kilograms (90 lb)|
|Calibre||138.6 millimetres (5.46 in)|
|Breech||semi-automatic, horizontal sliding block|
|Elevation||-10° to +28°|
|Rate of fire||8-10 rpm|
|Muzzle velocity||700 metres per second (2,300 ft/s)|
|Maximum firing range||16,600 metres (18,200 yd)|
The Canon de 138 mm Modèle 1927 was a medium-calibre gun of the French Navy used during World War II. It was derived from a German World War I design. It was used on the minelaying cruiser Pluton, the destroyers of the Aigle and Vauquelin classes and the Bougainville-class sloops.
The 40-calibre Mle 1927 was derived from the German World War I 15 cm L/45 UToF gun as mounted on the large torpedo boat SMS S113 received by France as war reparations. It copied the German gun's semi-automatic action and its horizontal sliding block breech. It had an autofretted, monobloc barrel. It used 8.967 kilograms (19.77 lb) of powder to push a 40.6-kilogram (90 lb) shell to a muzzle velocity of 700 metres per second (2,300 ft/s).
The Mle 1927 was used in single centre-pivot mountings that weighed approximately 13 tonnes (13 long tons; 14 short tons) that were fitted with a 3-millimetre (0.12 in) thick gun shield. The mount could depress -10° and elevate to +28° which gave it a maximum range of 16,600 metres (18,200 yd). The gun had a firing cycle of 4 or 5 seconds with its automatic spring rammer, but the dredger hoists transporting the shells and cartridge cases slowed the rate of fire down to 8-10 rounds per minute.
- Campbell, p. 298
- "French 138.6 mm/40 (5.46") Model 1927". 22 July 2007. Retrieved 2009-06-25.
- Campbell, John. Naval Weapons of World War Two. London: Conway Maritime Press, 2002 ISBN 0-87021-459-4
Media related to Canon de 138 mm Modèle 1927 at Wikimedia Commons