That they are used widely on inland waterways and the open seas makes towagecontract on sea become a kind of maritime contract that couldn' t be ignored.
她们在内陆水域和海洋上的广泛应用，使海上拖航合同成为了一种不容忽视的海商合同。
2
Article155a contract of sea towage is a contract whereby the tugowner undertakes to tow an object by sea with a tug from one place to another and the tow party pays the towage.