Filling system for LNG ship

The invention provides a filling system for an LNG ship. The filling system for the LNG ship comprises a storage tank system and a buffer extraction tank, wherein the storage tank system and the buffer extraction tank are fixed on a ship body; the storage tank system comprises an outer support frame fixed on the ship body, and a first storage structure, a second storage structure, a third storagestructure, a fourth storage structure and a fifth storage structure are sequentially arranged in the outer support frame from bottom to top; and the first storage structure, the second storage structure, the third storage structure, the fourth storage structure and the fifth storage structure each comprise at least one storage tank. According to the filling system for the LNG ship, with adoption of the modular arrangement way, the stability and safety of the LNG ship in the running and transportation processes are guaranteed. 本发明提出了一种LNG船用加注系统，包括固定在船体上的储罐系统和缓冲抽取罐；储罐系统包括固定在船体上的外支撑框架，外支撑框架中自下而上的依次设有第一存储结构、第二存储结构、第三存储结构、