Maritime Act Article 93

The tows in parallel or series connection shall be jointly and severally liable to an injured third party for the damage arising out of the towing navigation. However, the innocent tug(s) shall have a right of recourse against the wrongful tug(s).
中文原文 海商法第93條
共同或連接之拖船,因航行所生之損害,對被害人負連帶責任。
但他拖船對於加害之拖船有求償權。

English translation for reference only; the Chinese text prevails. Not legal advice.