Although the Allies could protect their convoys in late 1941, they were not sinking many U-boats.

Stuart next commanded the Captain-class frigate Fitzroy, during which time he played a key role in sinking two U-boats.

After helping to escort many convoys and sinking two U-boats, she was decommissioned and sold in 1945.

In all, Upholder was credited with having sunk 97,000 tons of enemy shipping, in addition to three U-boats and one destroyer.

Walker's group succeeded in sinking at least three more U-boats during his tenure as commander of the 36th Group.

Walker's group sank two U-boats on the outward trip and a third on the return trip.

Coastal Command sank 27 U-boats in 1942 and damaged 18 more.

These squadrons escorted Allied convoys and sank 12 U-boats.

Mary B Mitchell claimed to have sunk two U-boats in the same day.

The escorts of ONS-5 had sunk five U-boats; Allied aircraft, one.