Accumulated number of lost
U-Boats from the beginning of the war.
Balanced number of enlisted
U-Boats (at the beginning of each month).
Data from Rohwer (and Tarrant, when these are smaller).
EFFICIENCY and RENTABILITY of the U-Boats
EFFICIENCY: GRT sunk by each enlisted U-Boat (absolute number on each month).
RENTABILITY: GRT sunk by each lost U-Boat (accumulated).
Accumulated number of lost
U-Boats from the beginning of the war.
Balanced number of enlisted
U-Boats (at the beginning of each month).
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