|unit_cost=
|production_date=
|number=
|variants=
|weight=
|length= 130 metres (bottom of page)
|part_length=
|width=
|height=
|diameter=
|crew=
|cartridge= 140 kg
|caliber= 150 mm
|action=
|rate= 300 shells per hour (projected)
|velocity= 1500 m/s
|range=
|max_range= 165 km
|feed=
|sights=
|breech=
|recoil=
|carriage=
|elevation=
|traverse=
}}
The V-3 cannon (German: Vergeltungswaffe 3) was a German World War II supergun invented by Rƶchling's Chief Engineer Coenders and housed in a huge underground complex at Mimoyecques in northern France. Also known as the "High Pressure Pump" (German: Hochdruckpumpe) and the "Fleissiges Lieschen" (English: diligent little Lisa), (bottom of page) the complex was attacked during Operation Crossbow using Tallboy bombs and Operation Aphrodite guided drones and liberated by Canadian forces in late August 1944 before it became fully operational.As with the V-1 flying bomb and V-2 rocket, the V-3 was intended as a set of weapons, althoug