Communication Intelligence Summary,
November 30, 1941
General.-Traffic volume less than for past few days. Today's traffic consisted largely of dispatches bearing old
dates, some as far back as 26 November.
No reason can be given for the retransmission of these messages unless the high volume of traffic
for past few days has prevented the
repetition of dispatches. The number of dispatches originated on the 30th is very small. The only tactical circuit
heard today was one with AKAGI and
several MARUs. The TOKYO Intelligence activity
originated two WIWI dispatches to Major Fleet Commanders. One urgent dispatch was sent by NGS to Chiefs of
Staff Combined, Second, Third, Fourth,
and Fifth Fleets, Combined Air Force; Submarine Force and China Fleets.
Combined Fleet.-The Chiefs of Staff of the Combined Fleet and First Fleet are in KURE. In the same message the
Chief of Staff Second Fleet was nor at
any location. Other traffic indications are that he is at sea. Commander in Chief Second Fleet sent one
to his usual addressees of the Third
Fleet and Combined Air Force but also included KONGO and HIYEI, which places them as members of his
Task Force. The Commander in Chief
Second Fleet is no longer adding PALAO activities and has not for past two days. The RNO PALAO today addressed
two messages to TAIWAN GUNSIREIBU
(TAIWAN Army Headquarters).
Third Fleet.-Commander in Chief Third Fleet addressed two messages to COMDESRON Two, Four and Five; COMCRUDIV Five;
First and Second Base Forces and
Defense Division One for information to Commander in Chief Second Fleet. No information obtained as to
the location of the Commander in Chief
Third Fleet, which gives the strong impression that he is underway.
Fourth Fleet.-Believed to be still in TRUK area. D. F. activity in Marshalls a little greater today than normal.
JALUIT addressed Commander Submarine
Force and AIRRON 24 in one dispatch. The continued association of JALUIT and Commander Submarine Force plus
his known progress from the Empire to
CHICHIJIMA to SAIPAN makes his destination obviously the Marshalls. Since one of his large units
(SITI4) arrived in the Marshalls some
time ago this unit cannot agree with Com 16 that there is not a submarine concentration in that area. Every
evidence points to a concentration of
not only the small Fourth Fleet submarines there but also a good portion of the Fleet submarines of the Submarine
Force. AIRRON 24 plus YOKOHAMA AIR
CORPS presence in that area points to intended
air-submarine operations from the Marshalls. Also the presence of a unit of plane guard destroyers indicates
the presence of at least one carrier in
the Mandates although this has not been confirmed.
South China.-BAKO active with dispatches to Second and Third Fleets. Combined Air Force and SAMA. Commander in
Chief China Fleet becoming more and
more active as an originator with dispatches to the Task Force. He made a movement report with the South
China Fleet as an information addressee.
The Staff Communication Officer of the South China Fleet was addressed at Shanghai today.
U.S. CONGRESS JOINT COMMITTEE ON PEARL HARBOR ATTACK HEARINGS; PT. 35, THE CLAUSEN INVESTIGATION, PP. 62-81.
EXHIBIT "A" DAILY COMMUNICATION INTELLIGENCE SUMMARIES)