Device fitted to a buoyant mine which, on operation after a pre-set time, floods the mine case and causes it to sink to the bottom
Isixhobo esifakwe kwibhombu edadayo esithi, xa isebenza emva kwexesha elibekelweyo, siphuphumalise isingxobo sebhombu kwaye oko kuyibangela ukuba izike iyokuhlala phantsi