List of all U-boats




Ordered25 Sep 1939
Laid down16 Nov 1939 Deutsche Werke AG, Kiel (werk 267)
Launched18 May 1940
Commissioned27 Jun 1940Oblt.Wolfgang Lüth (Knights Cross)
27 Jun 1940 - 20 Oct 1940  Oblt. Wolfgang Lüth (Knights Cross)
21 Oct 1940 - 31 Dec 1940   Peter Lohmeyer
1 Jan 1941 - 18 Jun 1941  Oblt. Franz Gramitzky
5 patrols
27 Jun 1940-31 Aug 1940  1. Flottille (training)
1 Sep 1940-31 Dec 1940  1. Flottille (active service)
1 Jan 1941-30 Apr 1941  22. Flottille (school boat)
1 May 1941-18 Jun 1941  3. Flottille (active service)
Successes6 ships sunk, total tonnage 48,564 GRT
1 ship damaged, total tonnage 6,993 GRT

Sunk 18 June 1941 west of Cadiz, in position 36.04N, 07.29W, by depth charges from the British destroyer HMS Faulknor. 27 survivors (no casualties).

Loss position

See the 7 ships hit by U-138 - View the 5 war patrols

Attacks on this boat and other events

26 Sep 1940
A few hours before reaching base at Lorient, U-138 encountered the British submarine HMS Tribune which fired four torpedoes at her. None hit the U-boat, which docked shortly afterwards.

1 recorded attack on this boat.

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-138 did not suffer any casualties (we know of) until the time of her loss.

Media links

U-Boat Operations of the Second World War - Vol 1

Wynn, Kenneth

German U-Boat Losses During World War II

Niestle, Axel

Hitler's U-boat War

Blair, Clay

There was another U-138 in World War One
That boat was launched from its shipyard on 12 Jan 1917 and commissioned into the Imperial Navy on 26 Mar 1918. The Naval war in WWI was brought to an end with the Armistice signed on 11 Nov, 1918. Read about SM U 138 during WWI.