“a) Possibility of supplying fuel, compressed air, oxygen, provisions;
“b) Repair opportunities for normal overhaul work after an encounter;
“c) Good opportunities for accommodating U-boat crews;
“d) Flak protection, L.A. antiaircraft armament, patrol and M/S units.
“(2) Establishment of the possibility of supplying fuel in Narvik as an alternative.”
That is a Dönitz memorandum.