|Ordered||25 Sep 1939|
|Laid down||16 Nov 1939||Deutsche Werke AG, Kiel (werk 267)|
|Launched||18 May 1940|
|Commissioned||27 Jun 1940||Oblt.Wolfgang Lüth (Knights Cross)|
|Successes||6 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 destroyers HMS Faulknor, HMS Fearless, HMS Forester, HMS Foresight and HMS Foxhound. 27 survivors (no casualties).
Attacks on this boat
26 Sep 1940
A few hours before reaching her base at Lorient, U-138 encountered the British submarine HMS Tribune which fired four torpedoes towards the German sub. None hit the U-boat, which escaped and reached its base.
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.
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 the U 138 during WWI.