The U-boat war in Maps

The Straits of Gibraltar

This is the area through which all boats entering the Mediterranean had to traverse. The Straits of Gibraltar itself was a very dangerous part of the journey as it is very narrow and was always heavily patroled by allied vessels. U-boats did patrol these waters as they were used heavily for shipping, among others to sustain the war in Africa.

U-boats lost near Gibraltar


1941. 1942. 1943. 1944. 1945.

Click on any marker to see the boat's number. Left double-click to zoom-in. Right double-click to zoom-out.

In this area 27 U-boats were lost during WWII.

The U-869 was long believed to have been sunk north-west of Casablanca. She has since been confirmed to be on the US East Coast instead, having never reached the Gibraltar area.

Bloody Biscay

Goss, Chris

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Books dealing with this subject include

A la Sombra de la Roca. Escuadra Sánchez, Alfonso, 1997.
Bloody Biscay. Goss, Chris, 1997.
Decima Flottiglia MAS. Borghese, Iunio Valerio, 1965. (transl.)
Huelva en la II Guerra Mundial. Ramírez Copeiro del Villar, Jesús, 1996.
The Nightmare Convoy. Lund, Paul and Harry Ludlam, 1987.

The Maps