After shakedown, Hunt participated in training and readiness exercises with the Atlantic Fleet and conducted torpedo trials on the range out of Newport, Rhode Island.

On 9 May, while escorting convoy OB 318, she was involved, with the destroyer Bulldog and the corvette Aubrietia, in the capture of German submarine U-110 between Iceland and Greenland.

The submarine continued to shadow the Allied ships until early in the afternoon watch when she launched three torpedoes from periscope depth.

Unfortunately the prize sank while in tow to port, but not before her captors had recovered documents of great value and importance to the Allies' cause – including an intact Naval Enigma machine.

Broadway was modified for trade convoy escort service by removal of three of the original 4"/50 caliber guns and three of the triple torpedo tube mounts to reduce topside weight for additional depth charge stowage and installation of hedgehog.

After refitting at Belfast in September 1943, Broadway became a target ship for aircraft and served as such at Rosyth in Scotland until the war ended in Europe.