Simon.
Correction KNM Kya was U 926. I seems to remember the U 926 KNM Kya and U 995 KNM Kaura had relatively small differences, the U 1202 KNM Kinn was a bit more different from U 995. All three built at different yards in 1943.
U 995 was built at Blohm & Voss, Hamburg, U 926 was built at Neptun Werft Rostock AG and U 1202 at F.S. Schichau Werft, Danzig.
Tore