24 cm Nos. 1 & 2
The forward 24 cm mount of the Jacob van Heemskerck and Hertog Hendrik were later placed in the German coastal battery MKB Brandenburg, Hoek van Holland on the island De Beer. A third mount was also placed there, to which ship it belonged is unknown. One of the mounts burnt out later, and was only used as a ammo stack afterwards.
| No picture available |
| Gun specs | ||
| Gun type | Krupp 24 cm/40 type no 1 & 2 | |
| Purpose | Low angle (seatargets only) | |
| Bore | 240 mm (9,449 inch) | |
| Bore length | 37,15 calibres | |
| Classes used on | Hertog Hendrik class Jacob van Heemskerck-class |
|
| Date in service | No. 1: 1904 | |
| No. 2: 1907 | ||
| Gunweight | 24,5 metric tonnes | |
| Initial velocity | No. 1: 2690 feet/sec | |
| No. 2: 2790 feet/sec | ||
| Rate of fire | ||
| Shell specs | ||
| Shell types | AP and HE | |
| Shell weight | 375 lbs ( 170 kg ) | |
| Range ( max ) | ||
| Mount specs | ||
| Mount type | Armoured turret | |
| Mount armor | 4 inch (102 mm) | |
| Elevation | + 20 / - 4 degrees | |
| Train | ||
| Train method | ||
| German sources list the muzzle velocity as 2559 feet/sec for both types (as coastal defence guns) | ||
| Related Links | ||
| Seeziel Batterie "Brandenburg" | ||
Sources
John Campbell "Naval weapons of WW II"
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