There are several legislative modes about the applicable law of the possessory lien on vessel in international society,that is the law of the flag,the law of the vessel situated,lex voluntatis and the law of court.
国际社会关于船舶留置权的法律适用主要有适用船旗国法、适用被留置船舶所在地法律、适用当事人约定的法律、适用法院地法几种立法实践。