guard ship
Noun
Meaning
a warship (at anchor or under way) required to maintain a higher degree of readiness than others in its squadron
Source: WordNetSynonyms
Antonyms
Hypernyms
Examples
A committee in the Italian Senate has formally authorised an investigation into Lega’s Matteo Salvini over allegations of kidnapping migrants who weren’t disembarked from the Italian coast guard ship Gregoretti in July.
It's not really a warship it's more of a beefier coast guard ship.
In the autumn of 1971, the ship sailed towards Amchitka and faced the U.S. Coast Guard ship Confidence which forced the activists to turn back.
Japanese Coast Guard ship Kudaka also assisted in the search.