PQ 17 losses

[Adam]

Perhaps someone can shed light on the following for me, please:

In PRO AIR 16/540 it notes that the Christopher Newport was torpedoed by a 'solitary He 115'. It does not give a date or the results of the attack but as, from what I have read, the ship was sunk by U-457 I am a little confused. Any help on identifying the crew and aircraft of this possible attack would be appreciated.

In addition if anyone could shed any light on aircraft (Wnrs, Vkz, Units, etc) and crews that claimed the eight ships sunk from PQ-17 and the ten from PQ-18 I'd be most appreciative.

Thanks in advance for any assistance

Adam T