A complicated built-up design used on early French Battleships. After those ships were scrapped, the guns were then used as coastal artillery during World War II. It is believed that some of these guns were also disassembled and their A tubes then used for the 203 mm/55 (8") Model 1931 guns used on the heavy cruiser Algérie.
I have not been able to determine the differences in the Model years, but I suspect that it had to do with the mountings. Actual bore length was 48.92 calibers.
Some of the APC shells for these guns were converted to aircraft AP bombs.
|Designation||240 mm/50 (9.45") Model 1902 and 1906|
|Ship Class Used On||Danton class|
|Date Of Design||1902 / 1906|
|Date In Service||1911|
|Gun Weight||28.94 tons (29.4 mt) including breech mechanism|
|Gun Length oa||N/A|
|Bore Length||462.2 in (11.741 m)|
|Twist||RH 1 in 57|
|Rate Of Fire||about 2 rounds per minute|
|Projectile Types and Weights||AP: 485 lbs. (220 kg)
HE: 485 lbs. (220 kg)
|Propellant Charge||147.7 lbs. (67 kg) BM15|
|Muzzle Velocity||AP: 2,625 fps (800 mps)|
|Approximate Barrel Life||N/A|
|Ammunition stowage per gun||N/A|
Aircraft AP bomb weighed 485 lbs. (220 kg).