[Lokisaga]

Hi all,
I'd like to know what supplies the covert tankers and re-supply ships (Max Albericht, Brake, etc.) carried. I did some research on uboat.net, but I couldn't find anything specific. It sounds like most of them were civilian tankers pressed into service. Did they still retain their civilian crews, or were they crewed by Kriegsmarine personal? I assume they supplied the u-boats with fuel, food, and maybe a few spare parts (not sure if a u-boat and a tanker have much in common, mechanically speaking). Did they carry torpedoes? If they did, and if the they had civilian crews, that seems very risky.

Thanks