escaped a bombing attack by a Royal Canadian Air Force Bolingbroke bomber on 23 March which inflicted minor damage. The submarine returned to Brest in France on 2 February to resupply and rearm. Second patrol The second patrol left from Brest on 9 March 1942, and after a brief sweep in her previous area of operations, she swung south to take advantage of the Second happy time then occurring off the United States's Eastern Seaboard. During this patrol she sank seven more ships; three of them in one attack on a small coastal convoy, in which she hit several small barges and coastal cargo ships. She sank the tanker by torpedo on 23 March. U-754 returned to Brest on 25 April 1942. Third patrol Her final patrol was her least successful, in terms of ships sunk, although the tonnage was higher, as she sunk the 12,435 GRT Waiwera in the mid-Atlantic on 29 June, ten days after leaving Brest. Attack on Ebb It was nearly a month later, on 28 July, that U-754 scored her final victim, when she controversially shelled the fishing vessel Ebb near Cape Sable Island, Nova Scotia. Ebb was a motor fishing trawler operating out of Boston for the General Sea Foods Company. The crew of the small 260 GRT vessel felt it was unlikely that they would be troubled by the war, as she was far too small for an effective torpedo shot, and too insignificant to justify the risk of a surface attack by gunfire. On 28 July 1942, however, while fishing off Cape Sable her crew were shocked to see U-754 emerge from the water. The submarine immediately opened fire without warning on Ebb with her anti-aircraft guns. The ship stopped and made signals that they had surrendered, but the gunfire continued, one gun sweeping through the crowd of crew members attempting to launch the ship's life raft. Five of the seventeen crew were killed and seven more seriously wounded, before Ebb sank after taking over fifty hits. The survivors were discovered and rescued by the W-class destroyer fourteen hours later. Had U-754s crew survived the war, it is possible that they would have been charged with war crimes as were the officers of who also fired on sailors who had abandoned their ship. Similar incidents of gun attacks aimed at crews occurred on the and . RCAF attack and sinking Radio transmissions