German submarine U-86 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II. She was laid down at the Flender Werke in Lübeck on 20 January 1940 as yard number 282. Launched on 10 May 1941, she was commissioned on 8 July and completed training with the 5th U-boat Flotilla under the command of Kapitänleutnant (Kptlt.) Walter Schug. She was reassigned to the 1st flotilla, initially for further training on 1 September before being ready for operations from 1 December. She stayed with that organization until her loss on 29 November 1943. U-86 completed eight war patrols with the flotilla, sinking three ships, totalling. She also damaged a ship of. She was a member of ten wolfpacks. She was sunk on 29 November 1943 east of the Azores, in position 40°52'N, 18°54'W, by depth charges from two British warships, HMS Rocket (H92) and HMS Tumult (R11). 50 dead (all hands lost).

Design

German Type VIIB submarines were preceded by the shorter Type VIIA submarines. U-86 had a displacement of 753 t when at the surface and 857 t while submerged. She had a total length of 66.50 m, a pressure hull length of 48.80 m, a beam of 6.20 m, a height of 9.50 m, and a draught of 4.74 m. The submarine was powered by two MAN M 6 V 40/46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2800 to 3200 PS for use while surfaced, two BBC GG UB 720/8 double-acting electric motors producing a total of 750 PS for use while submerged. She had two shafts and two 1.23 m propellers. The boat was capable of operating at depths of up to 230 m. The submarine had a maximum surface speed of 17.9 kn and a maximum submerged speed of 8 kn. When submerged, the boat could operate for 90 nmi at 4 kn; when surfaced, she could travel 8700 nmi at 10 kn. U-86 was fitted with five 53.3 cm torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm SK C/35 naval gun, 220 rounds, and one 2 cm anti-aircraft gun The boat had a complement of between forty-four and sixty.

Service history

First patrol

U-86 departed Kiel on 7 December 1941 for her first patrol. She docked at Brest on the French Atlantic coast on the 22nd where she would be based for the rest of her career.

Second patrol

U-86's second patrol started on 27 December 1941. She damaged the British Toorak on 16 January 1942. On the 18th, she sank the Greek Dimitios G. Thermiotis.

Third and fourth patrols

On her third foray, she left Brest on 25 March 1942. It was relatively uneventful. She returned on 26 May. Sortie number four began on 2 July 1942. On 6 August, she sank an American sailing ship, the Wawaloam with her deck gun.

Fifth, sixth and seventh patrols

This (fifth) outing was also quiet, starting on 31 October 1942 and finishing on 7 January 1943. Having left Brest on 24 February 1943, she encountered and sank her final victim, the Norwegian Brant County on 11 March. U-86's seventh patrol was between 8 July and 11 September 1943.

Eighth patrol and loss

The boat departed Brest for the last time on 11 November 1943. She was sunk east of the Azores on the 29 November 1943 by depth charges from the British destroyers HMS Tumult (R11) and HMS Rocket (H92). 50 men died; there were no survivors.

Previously recorded fate

U-86 was listed as missing in the North Atlantic from 28 November 1943. The boat was claimed sunk by aircraft from the USS Bogue (CVE-9) on 29 November 1943. This attack was subsequently attributed to GS U-764 which escaped undamaged.

Wolfpacks

U-86 took part in ten wolfpacks, namely:

Summary of raiding history