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 Oporto, Portugal, by the British corvette and the sloop .
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