The shallowest depth of water in which a ship will not actuate a ground mine or type under consideration, usually quoted for conditions of ship upright, calm sea and a given speed
Obona bubanzi bunganzulwanga bamanzi apho inqanawa ingasayi kuqhuba bhombu yamhlaba okanye yolunye uhlobo oluthathelwa ingqalelo, edla ngokuchazelwa imeko yokumiswa kwenqanawa, ulwandle oluzolileyo nesantya esinikiweyo