U-1232 was a Type IX U-boat of the German Kriegsmarine during World War II. She made one offensive patrol, from November 1944 to February 1945, to North America. On 14 January 1945, the boat torpedoed and sank three ships within 13 minutes near Halifax Harbour off the Atlantic coast of Canada. During this action she was damaged so severely that she was forced to return to base. In May 1945 the British military captured U-1232 at Wesermünde, Germany. On 4 March 1946 the boat sank at after she foundered whilst being towed to the scuttling grounds.