[151] Communication
Intelligence Summary, 14 November 1941
General.-Traffic volume a little under normal due to poor to fair receiving
conditions throughout the day. The Naval Ministry originated several AlNav dispatches.
There were three WIWI messages originated today.
1. UNIWIWI from N. G. S. and BUMIL
to Chief of Staff Fourth Fleet information Chief of Staff Combined Fleet and YOKOSUKA.
2. WIWI from N. G. S. and BUMIL
to Chief of Staff Combined Fleet, Chief of Staff Third Fleet, YOKOSUKA and SASEBO.
3. UNIWIWI from N. G. S. to ANI758 (Chief of Staff of an unidentified unit), Information
Chief of Staff Combined Fleet and Chief of Staff Combined Air Force.
Direction Finder Net active with SASEBO station sending in bearings in addition
to the others. Tactical circuits heard during day with a fair amount of activity.
Combined Fleet.-Little activity noted. The flagship of BatDiv Three is still
operating but no further information on this division. Two Combined Fleet units
appear active in the traffic. They are DesRon Three (normally in First Fleet but
has been operating with Second Fleet) and CruDiv Seven of Second Fleet. Both of
these units have been associated in traffic with the South China Fleet and the French
Indo China Force. They may proceed to the South China area in near future.
Third Fleet.-Still in Sasebo area. The CinC. has been addressed by Tokyo
to a great extent and is still associated with South China activities in traffic.
It has been noted that the association between the Third Fleet and units of the
Combined Air Force is growing. Especially the Second Base Force has been talking
with several Air Corps among whom is the Kure Air Corps. Will air units be embarked
in ships of the Base Force?
Fourth Fleet.-No movement yet from the TRUK area. It appears that the Fourth
Fleet Staff is fairly well split up. Various officers of the staff were addressed
at Tokyo and at unidentified locations.
Submarines.-No particular activity. One unit evidently enroute PALAO and
Submarine Squadron Two (now in Kure area) still being addressed by Tokyo and Yokosuka
originators.
Air.-One Air Squadron of the Combined Air Force is at HOIHOW, HAINAN. The
Commander of the Air Force is still at TAKAO with a good representation of his command.
The Carriers remain in home waters with most of them in port.
(FROM: U.S. CONGRESS JOINT COMMITTEE ON PEARL
HARBOR ATTACK HEARINGS; PT. 35, THE CLAUSEN INVESTIGATION, PP. 62-81. EXHIBIT "A"
DAILY COMMUNICATION INTELLIGENCE SUMMARIES)