The purchase of the crane or derrick should exactly plumb the ring of the sling when the weight of the boat is evenly distributed between its legs.
Ukusetyenziswa komqokozo okanye kwetyathanga kungaluncedo ekutsaleni okanye ekuxhathiseni xa ubunzima besikhitshane xa sele buvakala ixhathisile kakuhle ngemilenze yaso.