petersburg, russia - july 28, 2016: small anti-submarine ship "

1155 /i> /b>,英语: b> i>type project 1155 anti-submarine destroy

p>反潜作战(anti-submarine warfare,asw)泛指以各种手段与装备进行

hsl-33 helicopter anti-submarine squadron light patch

hunter and hunted—antisubmarine warfare