U-boat patrols

Patrol info for U-17

DepartureArrival / FateDuration
13 Apr 1940Wilhelmshaven2 May 1940Kiel20 days


Officers *

Kptlt. Udo Behrens

Ltn. Hanns-Ferdinand Massmann

Patrol description

Formed a reinforcement group together with U-23 and U-24 for Operation Weseruebung, the German invasion of Denmark and Norway. The boat made a defensive patrol off Korsfjord and Karmsund. On 20 April, an ill crew member was transferred to the Schnellboot S-24 off Stavanger.

Daily positions, sinkings and allied attacks during the patrol of U-17

We have daily positions for all 20 days on this patrol.

Ships hit by U-17 during this patrol

General Events during this patrol


26 Apr 1940. U-17 rescued all four crewmen of the drifting Dornier Do18G WNr V856 (2./KüFlGr 406, K6+DK) in the North Sea about 100 miles south-east of Shetland Islands at 0533hrs. The flying boat had made an emergency landing at sea the day before, possibly after aerial combat with a British Blenheim aircraft (110 Sqn RAF). Unable to take it in tow the U-boat scuttled the aircraft with gunfire at 0615hrs.

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Attacks on U-17 during this patrol

We have no recorded attacks on U-17 duing this patrol.

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* These are officers that later became commanders themselves.

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