At 04.01 hours on 16 June 1942 the unescorted and unarmed Managua (Master Zenon Urresti) was struck on the port side in #3 hold by one G7e torpedo from U-67 while steaming on a non-evasive course at 8.5 knots about 45 miles southwest of Sombrero Lighthouse. The torpedo track was seen about 300 feet away in the calm sea but it was too late to take avoiding action. The explosion broke the back of the ship and the crew immediately abandoned ship in two lifeboats and two rafts without sending distress signals. The vessel listed to port and sank by then stern about 11 minutes after being hit. The U-boat approached one of the lifeboats and ordered two of the five men in it to come aboard for questioning. They were allowed to return to their boat after being asked about the name of vessel, last port of departure, destination, cargo and if there were English or Americans in the crew. In the evening of 17 June, the boat in charge of the master with 20 survivors landed at Matanzas, Cuba. The five survivors in the other boat made landfall on Pigeon Key on 17 June.