Calibre
150 mm
Barrel concept
Multi-chamber (smoothbore, sequential side charges)
Muzzle velocity (design)
~1,500 m/s
Range (design, against London)
~165 km
Range (Lampaden, against Luxembourg)
~45 km
Main site location
Mimoyecques, France
Planned barrels
25 (two batteries)
Manufacturer
Röchling-Werke
Chief designer
August Coenders