Johann Mohr
German World War II U-boat commander
About Johann Mohr
Lived 1916 – 1943 (aged 26). Johann Mohr was a submariner, military personnel and marineoffizier.
Johann Mohr (12 June 1916 – 2 April 1943) was a captain with the Kriegsmarine during World War II. He was a recipient of the Knight's Cross of the Iron Cross with Oak Leaves of Nazi Germany.
Mohr joined the Reichsmarine in 1934. After serving as first Watch Officer (second-in-command) to Georg-Wilhelm Schulz in on three patrols, in September 1941 he assumed command of the U-boat on six patrols, and sank 27 merchant ships, for a total of 129,292 GRT of Allied shipping.
On 25/26 September 1941 Mohr was part of a Wolfpack that attacked convoy HG 73. Mohr sank Empire Stream, Petrel and Siremalm. Rolf Mützelburg sank the steamer Cortes, for which Mohr has been wrongly credited.
On 24 November and 3 December 1941 Mohr sank the British light cruiser and the steamer Sagadahoc. On 14 March 1942 British Resource was sunk by Mohr and his crew. In March Mohr achieved a run of successes; Ceiba and Acme (17 March), Kassandra Louloudis and E.M. Clark (18 March), Papoose and W.E. Hutton (19 March), Esso Nashville and Atlantic Sun (21 March) and finally Naeco on 23 March completed the run. All but three were United States-owned vessels.
He sank four ships from Convoy ON 92 in May 1942; SS Empire Dell, Mount Parnes, Cristales and Llanover. On 9 June the Free French corvette Mimosa was engaged and sunk by U-124, the escort screen prevented Mohr from sinking any ships from Convoy ONS 100. Mohr persisted, and three nights later, on 12 June, he sank the 4,093grt British steamer Dartford. Six days later, Mohr picked up Convoy ONS 102 in the congested Atlantic shipping lanes. He accounted for the American cargo Seattle Spirit, which destroyed 5,627grt. Mohr's last success of the year came on 28 December, when U-124 torpedoed and sank the British ship Treworlas (4,692grt).
On 9 January 1943, Mohr intercepted the United States Navy Convoy TB-1. In a single action Mohr and his crew sank Broad Arrow (7,718grt), Birmingham City (6,194grt), Collingsworth (5,101grt) and the 4,554grt Minotaur; amounting to approximately 24,000 grts.
On 2 April 1943, Mohr sailed U-124 to intercept Convoy OS 45. He succeeded in penetrating the escort screen and sinking Gogra (5,190 grt) and Katha (4,357grt) in position . The escorts were alerted and began hunting the U-boat. Mohr was killed when U-124 was detected, engaged and sunk with all hands about west of Porto, Portugal, by the British corvette and the sloop .
Awards Spanish Cross in Bronze (6 June 1939) Memel Medal (26 October 1939) 177th Oak Leaves on 13 January 1943 as Kapitänleutnant and commander of U-124
Don’t just read it —
keep it.
Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.
- E-book
- Audio
- Video
Instant download · yours to keep · every purchase keeps this site free
Important facts
People in Johann Mohr's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Johann Mohr's
Frequently asked questions
Who was Johann Mohr?
German World War II U-boat commander (1916-1943)
When was Johann Mohr born?
Johann Mohr was born on 12 June 1916 in Hanover.
When did Johann Mohr die?
Johann Mohr died on 2 April 1943 in Atlantic Ocean.
What was Johann Mohr's occupation?
Johann Mohr was a submariner, military personnel and marineoffizier.
What nationality was Johann Mohr?
Johann Mohr's recorded nationality: German Reich.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Johann Mohr. https://biography.guide/johann-mohr/
MLA: "Johann Mohr." Biography.guide, https://biography.guide/johann-mohr/.
Chicago: "Johann Mohr." Biography.guide. https://biography.guide/johann-mohr/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
Page generated 2026-09-27 05:21 UTC