Buoy_anti-tank_obstacle
Buoy anti-tank obstacle
British anti-tank obstacle
Buoy is a British type of anti-tank obstacle used to block roads intended to impede enemy movement.[1] Buoys were widely deployed during the invasion crisis of 1940–1941. Each buoy was a truncated cone with a rounded bottom which was constructed out of concrete. They would be placed in at least five rows across a roadway.