U-171
German Type IXC U-boat that hit a mine near Lorient on 9 October 1942 while returning from its only patrol; 22 of its 54 crew died. It lies about 2.5 nm west-north-west of Groix at 39–40 m. French authorities classified it as a military cemetery in 1999.
Facts
- Region: France – Atlantic & Channel
- Area: South Brittany (Glénan, Groix, Quiberon, Belle-Île)
- Depth: 39–40 m
- Level: advanced
- Current: low
- Type: wreck
- Coordinates: 47.6578, -3.581
- Highlights: Type IXC U-boat, military cemetery since 1999
- Tips: Entering the U-boat is strictly forbidden. At around 40 m it needs Level 3 / deep qualifications and conservative planning.