oil barge meaning in Chinese

油驳船
油趸

Shortly after midnight , four male culprits armed with one pistol - like - object and three axes climbed up to an oil barge ( selling vegetable and palm oil ) anchored at west of sha chau , tied up three crewmen ( aged between 33 and 45 )
今晨（一月二十八日）零时左右，四名分别手持类似手枪物体及斧头的男子登上一艘停泊在沙洲以西卖菜油及橄榄油的趸船后，将船上三名年龄介乎三十三至四十五岁的船员困绑，随