Dokar Gurbacewar Mai na 1961, 33 USC Babi na 20 §§ 1001-1011, kafa ma'anar shari'a da hani na bakin teku ga masana'antar ruwa ta Amurka. Dokar ta yi amfani da yarjejeniyoyin kasa da kasa na rigakafin gurbacewar ruwa ta teku, a shekarata 1954. Yarjejeniyar kasa da kasa ta samar da tanadi don sarrafa fitar da gurbataccen mai daga jiragen ruwa a tekun. Majalisar dokokin Amurka ta 87 ta zartar da dokar S. 2187 kuma shugaban Amurka na 35 John F. Kennedy ya zartar a ranar 30 ga Agusta, shekarar 1961. Yarjejeniyar kasa da kasa don hana gurɓacewar teku ta Oil (OILPOL) taron ƙasa da ƙasa ne da Burtaniya ta shirya a shekarata 1954. An yi taron a London, Ingila daga 26 ga Afrilu, shekarata 1954 zuwa 12 ga Mayu, shekarar 1954. An kira taron na kasa da kasa don amincewa da zubar da sharar da ke haifar da hadari ga yanayin tekun . Yarjejeniyar kasa da kasa don rigakafin gurɓacewar teku ta hanyar mai, 1954 an rubuta ainihin rubutu cikin Ingilishi da Faransanci . An gyara yarjejeniyar kasa da kasa ta shekarun 1954 a 1962, 1969, da 1971.