Unlike the floating cranes used for handling cargoes in ports crane ships are also called on to continue to work in fairly rough seas.
Ngaphandle kwemilenge ejika-jikayo esetyenziswa ekugcineni imithwalo kwicala lasekhohlo lenqanawa neenqanawa zemilenge zibizwe khon'ukuze ziqhubeke ukusebenzisa kulwandle olungandlango-ndlongwanga kuyaphi.