At 05.09 hours on 22 March 1942 the unescorted Thursobank (Master Ralph Bryan Ellis) was hit on port side amidships by one G7e torpedo from U-373 about 200 miles south-southeast of Nantucket and sank by the bow five minutes after being struck by a second G7e torpedo, which was fired as coup de grâce from the stern torpedo tube at 05.35 hours. The master, 22 crew members and seven gunners were lost. 29 crew members and five gunners were picked up after three days by the Havsten and landed at Halifax on 28 March. Upon arrival, the surviving Chinese crewmen were arrested for mutiny, having placed the few British survivors in front of the lifeboat, throwing the oars away and refusing to share the food and warm clothing with them.