At 07.01 hours on 18 Nov 1942 the unescorted Tower Grange (Master William Henry Williamson) was hit by two torpedoes from U-154 about 250 miles northeast of Cayenne, French Guiana and sank by the stern after about 20 minutes. The U-boat had first spotted the ship at 08.34 hours the day before, but her zigzag course prevented an attack during the day. The vessel was lost in a rain squall shortly before midnight for about three hours and then evaded a spread of three torpedoes at 06.39 hours before being hit by a second spread. Four crew members and two gunners were lost. On 23 November, the master and 29 survivors were picked up by the British steam merchant Castalia and four days later landed at Trinidad. On 25 November, the chief officer and ten survivors were picked up by the British steam merchant Baron Belhaven and landed at Trinidad.