WWII Combined Operational Intelligence Centre Naval Summaries

When war broke out in the Far East and Pacific, the Combined Operational Intelligence Centre (C.O.I.C.) complemented the activities of the Central War Room (CWR) through the distribution of 'Hot' intelligence to the three Services, the C.W.R., New Zealand and Singapore.

These declassified digitsed C.O.I.C. summaries record the daily intelligence picture as it was interpreted at that time.

Alert: These pdf documents have been created from scanned images and accordingly are large in filesize. They may take time to download.

Naval Summary January 1941

January 1941


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pdf : 25.78 MB
Naval Summary August 1941

August 1941


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pdf : 29.87 MB
Naval Summary January 1942

January 1942


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pdf : 20.31 MB
Naval Summary March 1942

March 1942


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pdf : 37.87 MB
Naval Summary April 1942

April 1942


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pdf : 45.89 MB
Naval Summary May 1942

May 1942


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pdf : 43.39 MB
Naval Summary June 1942

June 1942


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pdf : 40.48 MB
Naval Summary July 1942

July 1942


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pdf : 42.71 MB
Naval Summary August 1942

August 1942


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pdf : 47.02 MB
Naval Summary September 1942

September 1942


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pdf : 47.05 MB
Naval Summary October 1942

October 1942


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pdf : 46.9 MB
Naval Summary November 1942

November 1942


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pdf : 31.76 MB
Naval Summary December 1942

December 1942


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pdf : 30.13 MB
Naval Summary January 1943

January 1943


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pdf : 45.39 MB
Naval Summary February 1943

February 1943


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pdf : 43.57 MB
Naval Summary March 1943

March 1943


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pdf : 35.05 MB
Naval Summary April 1943

April 1943


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pdf : 60.23 MB
Naval Summary May 1943

May 1943


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pdf : 61.28 MB
Naval Summary June 1943

June 1943


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pdf : 54.14 MB
Naval Summary July 1943

July 1943


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pdf : 73.47 MB
Naval Summary August 1943

August 1943


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pdf : 52.88 MB
Naval Summary September 1943

September 1943


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pdf : 49.25 MB
Naval Summary October 1943

October 1943


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pdf : 55.3 MB
Naval Summary November 1943

November 1943


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pdf : 52.47 MB
Naval Summary December 1943

December 1943


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pdf : 54.97 MB
Naval Summary January 1944

January 1944


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pdf : 63.27 MB
Naval Summary February 1944

February 1944


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pdf : 61.57 MB
Naval Summary March 1944

March 1944


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pdf : 51.6 MB
Naval Summary April 1944

April 1944


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pdf : 59.61 MB
Naval Summary May 1944

May 1944


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pdf : 73.77 MB
Naval Summary June 1944

June 1944


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pdf : 71.3 MB
Naval Summary July 1944

July 1944


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pdf : 97.04 MB
Naval Summary August 1944

August 1944


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pdf : 75.8 MB
Naval Summary September 1944

September 1944


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pdf : 27.25 MB
Naval Summary September 1944

September 1944


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pdf : 39.03 MB

October 1944


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pdf : 30.44 MB
Naval Summary October 1944

October 1944


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pdf : 28.07 MB
Naval Summary November 1944

November 1944


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pdf : 19.22 MB
Naval Summary November 1944

November 1944


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pdf : 42.95 MB
Naval Summary December 1944

December 1944


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pdf : 63.59 MB
Naval Summary January 1945

January 1945


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pdf : 63.91 MB
Naval Summary February 1945

February 1945


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pdf : 61.65 MB
Naval Summary March 1945

March 1945


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pdf : 71.88 MB
Naval Summary April 1945

April 1945


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pdf : 67.82 MB
Naval Summary May 1945

May 1945


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pdf : 58.56 MB
Naval Summary June 1945

June 1945


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pdf : 55.47 MB
Naval Summary July 1945

July 1945


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pdf : 49.09 MB
Naval Summary August 1945

August 1945


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pdf : 23.45 MB