1. They shipped out in that sailing vessel.
    他们在那条帆船上当了船员。

2. His answer was to lift the vessel out of the water by making it ride on a cushion of air, no more than one or two feet thick. This is done by a great number of ring-shaped air jets on the bottom of the craft.
    他的解决办法是把船体提离水面，让船在一个气垫上行驶，气垫只有一两英尺厚。船底装上大量环状喷气嘴以实现这一目的。

3. Which may keep company with the vessel for an hour without visible or more than occasional movement of wing.
    它们随船飞行一小时也难得见其扇动一下翅膀。