This gap was an area that landbased aircraft could not reach and as a result were not able to carry out their anti-submarine duties.

During this period, she also participated in occasional anti-submarine duty along the East coast.

They were built to a war-time design and intended for anti-submarine and escort duties.

They were used at first for maritime patrol and anti-submarine duties, but did not meet any German ships.

They were considered to be of limited usage, and best kept for anti-submarine duties.

While PC-1264 would escort one more convoy during the war, her primary mission now was anti-submarine duty.

About a third of the size of a fleet carrier, they carried between 20 and 30 aircraft, mostly for anti-submarine duties.

The ships had to be capable of both anti-submarine and mine-warfare duties.

From 1940 to 1942, she was engaged in North Atlantic escort and anti-submarine duty.

During the landings the following day, she provided gunfire support, then resumed anti-aircraft and anti-submarine duties.