它的主要任务是反潜

It often is specialized in antisubmarine warfare.

“Frigates, being a smaller vessel can providelimited air defenceto themselves andnearby vesselsbut arenot particularly well suited to theatre air defence,” says Kaushal.

考沙尔博士介绍，“护卫舰更小，一般用于为自身和周围舰艇提供有限的防空防御，但并不适用于较大战区范围内的空防。”

“They tend to be utilized primarily foranti-submarine warfareroles as well as providingshort rangeair defence as part of a larger surface group.”

护卫舰的主要任务是反潜，并为大型水面作战群提供近程防空防御。

Cost：

当然，驱逐舰更贵——

Typically, 2 or 3 Frigates can be built for the cost of 1 Destroyer.

一般来说，1艘驱逐舰的成本能建造2或3艘护卫舰。