In ships with a continuous non-watertight superstructure (i.e. shelter-deck vessels) the free-board is measured from the deck below the uppermost deck.
Kwiinqanawa eziphindiweyo nokungaqiniseka kobambo lwamanzi endawo ephindiweyo ngaphezulu kwenye(umz:ukhuseleko lomgangatho wenqanawa) ukhululo lwamaplanga lumetwe ekusukeni kumgangatho ongezantsi kumphezulu womgangatho.