The first two aspects concerns rank of maritime lien items, while the last one includes coexistence of maritime liens and ship mortgages as well as that of maritime liens and possessory liens on ship.

其中前两个方面属船舶优先权项目的位序问题，最后一个方面包括了船舶优先权与船舶抵押权之竞存以及船舶优先权与船舶留置权之竞存这两个问题。

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