词条 | frigate |
释义 | frigate naval vessel ![]() ![]() ![]() During World War II, Great Britain revived the name frigate by assigning it to a small escort ship used to guard convoys (convoy) from submarines. This vessel displaced about 1,500 tons, was capable of 20 knots, and was equipped with asdic, or sonar, and depth charges. In the postwar decades, the frigate also adopted an antiaircraft role, adding radar and surface-to-air missiles to its antisubmarine gear. Many frigates now carry helicopters to aid in submarine hunting. Such a vessel displaces upward of 3,000 tons, has a top speed of 30 knots or more and carries a crew of about 200. For three decades after World War II, the U.S. Navy applied the term frigate to a type of escort ship that was somewhat larger than a destroyer. In 1975 these ships were reclassified as cruisers and destroyers, and the United States then used frigate in the same sense as most other navies. |
随便看 |
|
百科全书收录100133条中英文百科知识,基本涵盖了大多数领域的百科知识,是一部内容开放、自由的电子版百科全书。