In ships with continuous bulwarks or well decks, such as small escort vessels and tugs, the correct functioning of freeing ports is essential to stability in rough weather.
Kwinqanawa ezinokuphindwa ngodonga lokukhusela okanye umgangatho ongowona-wona njengokukhupha encinci yenqanawa kunye nokutsala ngamandla, ukusebenza okulungileyo kokhululo kwidolophu enezibuko kukuko ukusebenza kwimozulu egadalala.