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It is believed that these guns were made partly from components of the old 240 mm/50 (9.45") Model 1902-06 guns. Actual bore diameter was 20.30 cm (7.992"). |
Heavy Cruiser Algérie in 1935
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Heavy Cruiser Algérie in 1941
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It is believed that these guns were made partly from components of the old 240 mm/50 (9.45") Model 1902-06 guns. Actual bore diameter was 20.30 cm (7.992"). |
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Heavy Cruiser Algérie in 1935
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Heavy Cruiser Algérie in 1941
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| Designation | 203 mm/55 (8") Model 1931 |
| Ship Class Used On | Algérie |
| Date Of Design | 1931 |
| Date In Service | 1933 |
| Gun Weight | 21.69 tons (22.04 mt) |
| Gun Length | 458.7 in (11.650 m) |
| Bore Length | 444.9 in (11.300 m) |
| Rifling Length | 365 in (9.272 m) |
| Grooves | (60) 0.75 in deep x 0.295 in (1.9 mm x 7.5 mm) |
| Lands | 0.118 in (3.0 mm) |
| Twist | Uniform RH 1 in 25.59 |
| Chamber Volume | 5,595 in3 (91.682 dm3) |
| Rate Of Fire | 3 rounds per minute |
| Type | Bag |
| Projectile Types and Weights | APC M1936 - 295 lbs. (134 kg)
Other APC and HE were of several types and weighed 271.4 to 272.98 lbs. (123.1 to 123.82 kg) |
| Bursting Charge | APC M1936 - N/A
Other APC - about 8.7 lbs. (4.0 kg) HE - about 18.2 lbs. (8.3 kg) |
| Projectile Length | APC M1936 - 38.2 in (97 cm)
Others - 39.6 in (100.5 cm) |
| Propellant Charge | 103.6 lbs. (47 kg) BM 13 |
| Muzzle Velocity | APC M1936 - about 2,756 fps (840 mps) |
| Working Pressure | about 19.4 tons/in2 (3,050 kg/cm2) |
| Approximate Barrel Life | about 600 rounds |
| Ammunition stowage per gun | N/A |
| Note: The propellant charge was in halves. | |
| Elevation | With 295.4 lbs. (134 kg) AP M1936 Shell |
| Range @ 45 degrees | about 33,000 yards (31,000 m) |
| Designation | Two-gun Mounts
Algérie (4) Model 1931 |
| Weight | N/A |
| Elevation | -5 / +45 degrees |
| Elevation Rate | about 10 degrees per second |
| Train | about +150 / -150 degrees |
| Train Rate | 6 degrees per second |
| Gun recoil | N/A |
| Loading Angle | N/A |