Note that there is much more complete information to be found on
the Losses in the Mediterranean, All
Navies page.
Source: U-boats Destroyed- German Submarine Losses in the World Wars by Paul Kemp (Naval
Institute Press, 1997).
1. Submarines are listed by date lost.
2. Date lost is in the format year/month/day. Dashes for the day indicate not known.
3. Location is fairly general, as described in Kemp.
4. Cause is given, where known. The unknown (ie '?') is very likely the result of blundering
into a mine, but the possibility of simple accident cannot be ruled out.
| U-Boat | Date Lost | Location | Cause |
| U-12 | 1915/08/08 | N Adriatic, near Venice | mine |
| U-3 | 1915/08/13 | Mediterranean, Strait of Otranto | ramming/gunfire |
| U-6 | 1916/05/13 | Mediterranean, Strait of Otranto | net barrage |
| U-16 | 1916/10/17 | Adriatic, off Albania | ramming (or perhaps depth charge) |
| U-30 | 1917/01/-- (?) | Mediterranean | ? |
| U-5 | 1917/05/16 | Adriatic | mine |
| U-23 | 1918/02/21 | Mediterranean, Strait of Otranto | explosive sweep |
| U-20 | 1918/07/04 | North Adriatic | submarine attack |
| U-10 | 1918/07/09 | North Adriatic | mine/grounding |
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