Fort de Loncin, february 99, bottom left 5.7 cm gun cupola. The cupola and the gun are both in good working condition. Every year, during the remembrance ceremony, at the exact moment of the explosion of the fortress, the cupola is raised and the gun fired.
The cupola could be lowered or raised.
| Specifications | ||
| Gun : | manufacturer : | Nordenfeld |
| length : | 1,46 m | |
| diameter : | 57 mm | |
| weight : | 190 kg | |
| grooves : | 24 | |
| elevation : | max. + 10° | |
| min. - 6° | ||
| Cyclic rate : | 20 rpm | |
| Cupola : | total weight : | 34000 kg |
| Ammunition : | steel : | weight 2,720 kg, range 3,3 km |
| cast iron : | weight 2,720 kg, range 3,3 km | |
| shrapnel : | weight 3,67 kg, range 0,3 km |
| Crew (7) | |
| Upper floor | 1 NCO or corporal |
| 3 soldiers | |
| Ground floor | 3 soldiers (ammunition carriers) |
Fort de Loncin, february 99, destroyed front left 5.7 cm gun cupola.