Hello Darius,
The two UJ-boats attacked by VENTURER were UJ 1753 and UJ 1751 (see DEFE3/576/890). Note also that UJ 1701 and UJ 1709 sailed from Stavanger at 2115/25 to hunt the submarine. UJ 1709 reported attacking a good contact at 0047/26 in AN 2998 (

left, ca. 59°09 N, 05°36' E) but VENTURER reported no such attack.
Best regards,
Platon