CAB80-32 — Page 286

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AVERAGE MONTHLY LOSSES Shown in Quarterly Periods OF BRITISH (RED)& FOREIGN (BLACK) MERCHANT SHIPPING BY DIFFERENT FORMS OF ENEMY ACTION · Monthly Tonnages of Broken Period SHOWN SEPARATELY for PURPOSES OF COMPARISON

NOTE:- INCLUDES VESSELS OF ALL TONNAGES-but excludes Commissioned Ships-ITALIAN LOSSES AREINCLUDED UP TO JUNE 10:1940.

By Submarine By Mine By Surface Craft By Aircraft By other causesor Cause Unknown

22

SEPT- DEC 39 MAR- JUNE-

SEPT DEC'40 MAR- JUNE- SEPT-

NOV 39 FEB40 MAY40 AUG'40 NOV40 FEB41 MAYAI AUG'4! NOV 41

NAVAL INTElligence Division Dec:1941.

This graph is based on information received in the Admiralty up to 1200 on 8th Dec. 1941

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