Raine, Norman Reilly "Mr. Gallup Backs a Cockroach"

A North Atlantic convoy short story. Raine’s hero in this tale is again the somewhat comedic Mr. Bellial Gallup, “by rights a master mariner, but until quite recently third mate of the deep-water tramp ship JAIPUR PRINCE.” The “quite recently” was a torpedoeing of the vessel just off the coast of Iceland, which left Mr. Gallup in the waters of the chilly North Atlantic (the JAIPUR PRINCE was eventually salvaged after she failed to sink). He is taken to “Rekjilak” [Reykjavik] to recuperate, where Gallup comes up with an ingeneous solution for trapping and destroying a German U-boat that had been sinking Allied ships at the entrance to Reykjavik harbor.