Melamu ea koporo ho boenjiniere ba likepe le Marine

Ho bola ho matla le litšoaneleho tse phahameng tsa ho fafatsa letsoai tikolohong ea Marine li beha litlhokahalo tse tiileng mabapi le ho hanyetsa ho bola ha thepa. Lithupa tsa koporo (haholo-holo koporo ea metsing, joalo ka HSn70-1), ka lebaka la likahare tsa tsona tsa thini, li etsa filimi e tsitsitseng ea oxide holim'a metsi, e leng se etsang hore e be lisebelisoa tse ratoang haholo bakeng sa li-propeller tsa likepe, liphaephe tsa metsi a leoatle le li-tube sheets tsa condenser. Ka mohlala, propeller ea mofuta o itseng oa seketsoana sa ho tšoasa litlhapi e lahleloa ho tloha HSn70-1 brass, 'me sekhahla sa eona sa selemo sa ho bola metsing a leoatle ke 0.02mm feela, e leng tlase haholo ho feta 0.5mm ea carbon steel e tloaelehileng, e leng ho fokotsa haholo litšenyehelo tsa tlhokomelo.