flyboat

The flyboat was exceptionally long compared with its width, had a flat bottom, and was lightly built.

这种快艇船身长度大大超出其宽度，底平，体轻。

It became evident that the flyboat could be used advantageously in certain bulk trades where the danger of piracy was low.

显而易见，快艇适于海盗劫掠可能性低地区一些大宗贸易使用。