Strictly speaking a vessel is under way when she has cast off from a quay or her anchor has broken out from the seabed irrespective of whether she is moving or not. Today it generally means that the vessel has cast off, or the anchor is clear of the seabed, and she is moving through the water.
Xa kuthethwa inyani inqanawa isendleleni kuphela xa isuka kwisithulelo seenqanwa okanye kwi-ankile nokuba iyahamba okanye imile. Namhlanje eli gama lithetha ukuba inqanawa isukile, okanye i-ankile isusiwe phantsi, kwaye iyazulazula apha emanzini.