Hans-Joachim Horrer
Born	(1908-02-06)6 February 1908 Dortmund, German Empire
Died	12 September 1942(1942-09-12) (aged 34) Arctic Ocean
Allegiance	Weimar Republic  Nazi Germany
Service / branch	Reichsmarine  Kriegsmarine
Years of service	1933–42
Rank	Korvettenkapitän
Commands	U-555 U-589
Battles / wars	World War II
Awards	Narvik Shield, Iron Cross 2nd Class, Iron Cross 1st Class

Hans-Joachim Horrer (6 February 1908 – 12 September 1942) was a German U-boat commander^[1] in World War II.

Hans-Joachim Horrer joined the Reichsmarine in 1933 and went through the usual officer training. He was a Gunnery Officer and Watch Officer on the destroyer Z9 Wolfgang Zenker from July 1938 to April 1940 when the destroyer was sunk during the fierce battles of Narvik, Norway. Horrer then started his U-boat officer training which lasted from July 1940 to January 1941. He was then assigned to the almost completed Type VIIC U-555 as Baubelehrung commander on 18 January, then taking command of the boat upon commission on 30 January 1941. He served on the boat until 25 August 1941 but never went on patrol. He again served as Baubelehrung commander from 26 August to 24 September 1941. He then took command of the new Type VIIC boat U-589. He went on eight patrols with the boat and was lost with his entire crew when the boat was sunk by depth charges from the British destroyer HMS Faulknor.,^[2] and depth charges from a Fairey Swordfish aircraft of the British escort carrier Avenger, south-west of Spitzbergen on 12 September 1942.

Date	U-boat	Name of ship	Nationality	Tonnage	Fate
1 May 1942	U-589	Tsiolkovskij	Soviet Union	2,847	Sunk
11 October 1942	U-589	Musson (No 23)	Soviet Union	417	Sunk

• Narvik Shield
• Iron Cross 2nd Class
• Iron Cross 1st Class