Dear Keith,

There were 4 U-Boats in the Greenock area at various times in the summer and autumn of 1945, albeit that they were not "stored" there.

They were the Type VIICs U-1105 and U-1171, the Type XXI U-2502 and the Type XXIII U-2326.

They were all being held by the Royal Navy pending Allied decisions about their future, but before those decisions were taken Admiral (Submarines) decided to take advantage of the situation and conduct some early trials.

He therefore arranged for these 4 U-Boats to be moved north in order to see what could be learned from them.

The RN managed a good look at U-2326, but the plan to test U-2502 came to nought.

The Navy's interest in the two Type VIICs was driven by the fact that U-1105 was one of the Albrecht (rubber covered) U-Boats, and they wanted to do comparative trials with a "normal" Type VIIC (U-1171).

Hope this helps.

Yours aye,

Derek.