At 23.00 hours on 28 Feb 1945, U-1022 fired a spread of three torpedoes at convoy UR-155 and heard detonations and sinking noises from two ships. In fact only the Alcedo (Master Marius A. Kolster) in position #22 was hit by one torpedo on the starboard side between #3 and #4 hatches. The force of the explosion sheared off the mainmast and it fell to port. The propeller shaft was broken stopping the engine and the #4 hold was immediately flooded. This caused the ship to sink by the stern after 25 minutes in 64°00N/22°46W. An Able Seaman had been caught in the safety net hanging over the starboard side, was trapped and drowned when the ship sank. Another AB fell into the hole on deck which was caused by the explosion. A Messman went down with the ship when he refused to jump overboard to be picked up by a lifeboat. In all three crew members died and eight were injured out of her complement of 32 crew members (three Americans and 15 other nationalities), five armed guards and passenger (US Navy security officer). The remaining survivors abandoned ship in two boats and two rafts and were picked up at 01.40 hours by HMS Home Guard (T 394) and landed in Reykjavik about four hours later.