were considerably larger than the original Type IXs. U-196 had a displacement of when at the surface and while submerged. The U-boat had a total length of, a pressure hull length of, a beam of, a height of, and a draught of. The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to. The submarine had a maximum surface speed of and a maximum submerged speed of. When submerged, the boat could operate for at ; when surfaced, she could travel at. U-196 was fitted with six torpedo tubes, 24 torpedoes, two SK C/32 naval gun, 240 rounds, and a SK C/30 with 2575 rounds as well as two C/30 anti-aircraft guns with 8100 rounds. The boat had a complement of fifty-five.
Service history
1st patrol
Under Kentrat's command she completed the longest patrol made by a submarine during World War II, leaving Kiel on 13 March 1943, and returning to Bordeaux on 23 October 1943, spending 225 days at sea. During that time she sailed all the way around the coast of South Africa and sank two British merchant ships in the Indian Ocean.
2nd patrol
U-196 sailed from Bordeaux on 16 March 1944 along with for service in the Far East. En route she sank a British freighter in the Indian Ocean. U-196 arrived at Penang on 10 August 1944.
3rd patrol
U-196 was transferred to the 33rd U-boat Flotilla on 1 October 1944. On 30 November, U-196 left Batavia, now commanded by Oberleutnant zur See Werner Striegler. After departure U-196 was reassigned to refuel a sister U-boat in the Indian Ocean, but the rendezvous never took place. Efforts to contact U-196 during early December 1944 failed to elicit a response. When she failed to return to Jakarta and failed repeatedly to signal her position, she was listed as missing in the Sunda Straits south of Java, effective from 12 December 1944. Her wreck has never been found. The cause of U-196s sinking remains unknown. It has been suggested that she struck an Allied mine laid by the British submarine. However, Porpoise did not lay the mines until 9 December 1944. Oberleutnant zur See Dr. Ing. Heinz Haake of U-196 is buried in a graveyard at Bogor, Java with members of the World War I German East Asia Squadron at Arca Domas, on the slopes of Mount Pangrango, Java. His date of death is listed on a memorial as 30 November 1944, the day U-196 sailed on her last voyage.
