[167]    Communication Intelligence Summary, 27 November 1941
 
General.-Traffic volume a little below normal due to poor signals on the  frequencies above 7000 kcs. Tokyo-Takao circuit unreadable on mid-watch.  Some tactical traffic intercepted from carriers. Bako, Sama, and Saigon  active as originators, addressing traffic to each other and to the  Chiefs of Staff of Second, Third Fleets and Combined Air Force. Bako  addressed the Chief of Staff Third Fleet information Destroyer Squadrons  Four and Five and Chief of Staff Second Fleet. The main Tokyo originator  today was the Intelligence activity who sent five dispatches to the  major commanders. The Direction Finder activity was very high with all  stations sending in bearings including the Marshall Islands Stations  which has been silent for the past four days.
COMBINED FLEET.-No further information as to whether or not Destroyer  Squadron Three is in Hainan area but is believed to be still with  Cruiser Division Seven in that area. There is still no evidence of any  further movement from the Kure-Sasebo area. The Chief of Staff Combined  Fleet originated several messages of general address. He has been fairly  inactive as an originator lately. CinC. Second Fleet originated many  messages to Third Fleet, Combined Air Force and Bako.
THIRD FLEET.-Still holding extensive communication with Baka, Sama South  China Fleet and French Indo China Force. The use of WE addresses is  increasing, those occurring today were:
"DAIHATIFUTABUTAISANBOTEU" (in Taihoku) "KOROKUKITISIKI"  "KIZUKEYAMASITABUTAI" (in care of RYUJO) "HEIZEUKAIGUNDAIGONREUSEU"
There is nothing to indicate any movement of the Third Fleet as yet.
FOURTH FLEET.-CinC. Fourth Fleet frequently addressed dispatches to the  defense forces in the Mandates. Jaluit addressed messages to the  Commander Submarine Force and several submarine units. The Saipan Air  Corps held communication with Jaluit and CinC. Fourth Fleet. The Civil  Engineering Units at IMIEJI and ENIWETOK were heard from after being  silent for weeks. Chitose Air Corps is in Saipan and Air Squadron  Twenty-four is still operating in the Marshalls. No further information  on the presence of Carrier Division Five in the Mandates.
AIR.-An air unit in the Takao area addressed a dispatch to the KORYU and  SHOKAKU. Carriers are still located in home waters. No information of  further movement of any Combined Air Force units to Hainan.
SUBMARINES.-Commander Submarine Force still in Chichijima Area.
 

(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)