| 28 cm MRK L/35 | |
|---|---|
 A 28 cm gun at Oscarsborg Fortress | |
| Type | Naval gun Coast-defense gun |
| Place of origin | German Empire |
| Service history | |
| Used by | German Empire Ottoman Empire Norway |
| Wars | Boxer Rebellion World War I World War II |
| Production history | |
| Designer | Krupp |
| Designed | 1891 |
| Manufacturer | Krupp |
| Specifications | |
| Mass | 43.9 t (43.2 long tons; 48.4 short tons) |
| Length | 9.8 m (32 ft 2 in) L/35 |
| Barrel length | 8.95 m (29 ft 4 in)[1] |
| Shell | Separate-loading, bagged charge and projectile |
| Shell weight | 240 kg (530 lb) |
| Caliber | 283 mm (11.1 in) |
| Breech | Horizontal sliding-wedge |
| Elevation | -5° to +25° |
| Traverse | -150° to +150°[2] |
| Rate of fire | 1 round every two minutes |
| Muzzle velocity | 685 m/s (2,250 ft/s)[1] |
| Effective firing range | 11 km (6.8 mi) at 25° |
| Maximum firing range | 14.45 km (8.98 mi) at 25°[2] |
The 28 cm MRK L/35 was a German naval gun that was used in World War I as the primary armament of the Brandenburg-class pre-dreadnought battleships. It also saw use as a Coastal-defense gun during World War II.