15 cm SK C/28
              < 15 cm SK C 
          | 15 cm SK C/28 | |
|---|---|
| 15 cm SK C/28 in Drh LC/34 turret from Gneisenau used as coast-defense guns in Denmark | |
| Type | Naval gun Coastline-defence gun | 
| Place of origin | Nazi Germany | 
| Service history | |
| In service | 1935–2001 | 
| Used by | Nazi Germany Denmark | 
| Wars | Second World War | 
| Production history | |
| Designer | Rheinmetall | 
| Designed | 1930—35 | 
| Manufacturer | Rheinmetall | 
| Produced | 1935—43? | 
| Specifications | |
| Mass | 9,026–9,080 kg (19,899–20,018 lb) | 
| Length | 8.291 metres (27 ft 2 in) | 
| Barrel length | 7.815 metres (25 ft 8 in) | 
| Shell | separate-loading, cased charge | 
| Caliber | 149.1 millimetres (5.87 in) | 
| Breech | semi-automatic, vertical sliding-block | 
| Elevation | depends on the mount | 
| Traverse | depends on the mount | 
| Rate of fire | 8 rpm (maximum) | 
| Muzzle velocity | 875 m/s (2,870 ft/s) | 
| Maximum firing range | 23,000 metres (25,000 yd) at 40° | 
The 15 cm SK C/28 was a German medium-caliber naval gun used during the Second World War. It served as the secondary armament for the Bismarck class and Scharnhorst-class battleships, Deutschland-class cruisers and the Graf Zeppelin-class aircraft carriers. A number of surplus weapons were used as coast-defense guns and eight were adapted to use Army carriages and used as heavy field guns as the 15 cm Schiffskanone C/28 in Mörserlafette.