海上通行证

例句：

1. 1. The captain needs a valid seafaring permit to board the ship.
   船长需要有效的海员通行证才能登船。
2. 2. The crew members were given their own tickets for the voyage.
   船员们被分配了各自的船票。
3. 3. Without proper documentation, they could not obtain a seafaring permit.
   没有适当的文件，他们无法获得海员通行证。