It's most likely the powder magazine, merchant vessels run heavily armed.

很可能是火药库，商船一般都有很好的武装。

Only the famous naval rescue mission conducted by thousands of small British fishing and merchant vessels managed to rescue victory from the jaws of defeat.

只有由数千艘英国小型渔船和商船执行的著名的海军救援任务才成功地将胜利从失败中拯救出来。

Between February 26 and April 2, six American merchant vessels were torpedoed, in most cases without any warning and without regard to the loss of American lives.

2 月 26 日至 4 月 2 日期间， 有 6 艘美国商船被鱼雷击中，大多数情况下没有任何警告， 也没有考虑美国人的生命损失。

Patrolling these waters on his ship-- The Adventure-- Blackbeard plundered the merchant vessels that passed through the Ocracoke inlet-- one of the busiest shipping waterways of the 18th century.

黑胡子乘坐他的冒险号船在这些水域巡逻，掠夺了通过奥克拉科克入口的商船——这是 18 世纪最繁忙的航运水道之一。

A warship overhauling a merchant vessel could easily take its crew and passengers on board for safe keeping as prescribed by international law;but a submarine ordinarily could do nothing of the sort.

一艘对商船进行大修的军舰可以很容易地按照国际法的规定将船员和乘客带到船上进行安全保管；但潜艇通常无法做到这一点。

Security measures on merchant vessels are usually predicated on discouraging the crews of attacking boats with non-lethal measures like long-range acoustic devices, floodlights and water cannons, together with barbed wire to repel boarders.

商船的安全措施通常基于阻止船员使用远程声学设备、泛光灯和高压水枪等非致命措施攻击船只，以及用铁丝网击退寄宿生。

The following May, after a torpedo attack on the steamship Sussex, the President scored a major diplomatic victory by forcing the Germans to agree not to target passenger ships nor to attack merchant vessels without warning.

第二年五月， 在苏塞克斯号轮船遭到鱼雷袭击后，总统迫使德国同意不以客船为目标， 也不在没有警告的情况下攻击商船， 从而取得了重大外交胜利。