The Bird-class minesweepers or trawlers were referred to as corvettes in the Royal New Zealand Navy, and two, Kiwi and Moa, rammed and sank a much larger Japanese submarine, I-1, in 1943 in the Solomon Islands.
Minestrygerne af Bird-klassen blev omtalt i Royal New Zealand Navy som korvetter, og to af disse, Kiwi og Moa, vædrede og sænkede den store japanske ubåd I-1, i 1943 ved Salomonøerne.