|Ordered||9 Oct 1939|
|Laid down||15 Feb 1941||Howaldtswerke Hamburg AG, Hamburg (werk 809)|
|Launched||17 Nov 1941|
|Commissioned||8 Jan 1942||Oblt. Götz Baur|
|Successes||2 ships sunk, total tonnage 10,066 GRT|
2 ships damaged, total tonnage 10,447 GRT
Scuttled on 12 Nov, 1942 in the Mediterranean near Oran, in position 36.07N, 01.00W, after sustaining damage by depth charges from the British corvettes HMS Lotus and HMS Starwort. 2 dead and 45 survivors.
U-660 operated with the following Wolfpacks during its career:
Steinbrinck (6 Aug 1942 - 11 Aug 1942)
Lohs (11 Aug 1942 - 28 Aug 1942)
Tümmler (3 Oct 1942 - 11 Oct 1942)
Wal (10 Nov 1942 - 12 Nov 1942)
Attacks on this boat and other events
25 Aug 1942
14.31 hrs, mid Atlantic south of Greenland: HNoMS Potentilla and HMS Viscount were rejoining convoy ONS-122 when HNoMS Potentilla obtained a radar contact. Three minutes later (and not previously visible due to foggy conditions), U-660 was sighted. Fearing damage to herself from ramming, HMS Viscount forced the U-boat to dive by opening fire, and after an abortive initial approach dropped five heavy depth charges. HMS Viscount then attempted a Hedgehog attack, but lost Asdic contact, as did HNoMS Potentilla. They were unable to regain contact and returned to the convoy after dropping single depth charges for about an hour. U-660 was not damaged. (Sources: ADM reports, KTB U-660)
3 Sep 1942
The attack by a British Whitley aircraft (77 Sqdn RAF/V) on 3 Sept. 1942 in position 47.55N, 10.04W, long believed to have sunk U-705, was in fact on U-660, causing no damage. (Sources: 1987-11-01, FDS/NHB)
2 recorded attacks 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-660 did not suffer any casualties (we know of) until the time of her loss.