400
350
300
250
200
150
100
50
40
30
20
10
Page 286
Page 286
•
233
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
Page 286
Page 286