From the diary of UB 94:

23.15h german time she torpedoed an steamer, estimated 3000 grt, out of an convoy of 3 ships in the area of S-Rock LV (square 384 J) which fits with the allied loss position.

As the convoy was still complete with 3 ships and the CO estimated his target as approx. 3000 tons and he claimed his target sunk, I'm sure that UB 94 sank the "Hunsdon" (2 hours + from british time).

Obviously the UB 92 was nearby and torpedoed the "Industry" 40 min. later.

Unfortunately, the diary of UB 92 didn't survive to tell the story!

Oliver