Umuringa wo mu mazi ni marine ya kera, imbaraga nyinshi hamwe na ruswa irwanya ruswa irimo umuringa wa 60%, amabati .75% na zinc 39.2%. Ikoreshwa cyane mubwubatsi bw'inyanja aho hakenewe ibikoresho bikomeye, birwanya ruswa kandi bikomeye kandi birakwiriye gukoreshwa umunyu n'amazi meza. Umuringa wo mu mazi ukoreshwa mumashanyarazi, ibyuma byo mu nyanja, ibikoresho byo gushushanya, shafting, shitingi hamwe na buckles. Hariho kandi byinshi mubikorwa byinganda, nkibikoresho byo gusudira, isahani ya kondenseri, imikoreshereze yuburyo, ibiti bya valve, imipira, imiyoboro ihinduranya ubushyuhe, ingunguru zindege, gupfa, nibindi byinshi.