The sum of the utilized and the reserve buoyancy of a vessel or the displacement of the completely water tight portion of the vessel when fully submerged. The utilized buoyancy is that buoyancy required to support the weight of the vessel.
Isixa samandla okudada enqanawe asetyenzisiweyo nagciniweyo okanye ukushenxiswa kwesahlulo senqanawe esingangeni manzi kwaphela xa sintywiliselwe ngokupheleleyo. Amandla okudada asetyenzisiweyo ngalawo afunekayo ukuxhasa ubunzima benqanawe.