[166]   Communications Intelligence Summary, 26 November 1941
 
General.-Traffic volume normal. All circuits heard well except for  Tokyo-Takao circuit which faded early. Traffic picture about the same as  for the past week. Intra-fleet traffic still very heavy and Tokyo  Bureaus still dispatching AlNavs. The Tokyo Intelligence and Direction  Finder plotting units addressed a succession of urgent dispatches to the  major commands and to the CinC. Second and Third Fleets in particular.  The only MAM schedule was NR15 which was first broadcast on the twenty- fifth. Takao and Bako originated more traffic today than usual, it was  addressed to Third Fleet mostly but the CinC. Second Fleet and the China  Fleets came in for their share. Tokyo radio is working the ISIZU  (flagship South China) SAMA and CAMRANH Bay radio stations directly  Takao is also working ITSUBA (Spratleys).
Combined Fleet.-Cruiser Division Seven today began receiving traffic via  SAMA, indicating the arrival of that unit in HAINAN waters. While no  indications were seen that Destroyer Squadron Three also arrived it is  probable that this unit is still in company with Cruiser Division Seven  and is also present at Hainan. The Takao, former flagship of the Second  Fleet became active in the traffic today being associated with the  Second and Third Fleets. The tanker HAYATOMO appeared in several of  CinC. Second Fleet's dispatches today as well as the SOYO MARU. No  movement is evident yet of any of the flags of the newly formed force.  The traffic between Second, Third, Fourth Fleets and the Combined Air  Force still continues at its high level.
Fourth Fleet.-No change in Truk location. CinC. held extensive  communication with Saipan forces as well as Palao forces. The KATORI and  CinC. Submarine Fleet appear to be at or near Chichijima.
Fifth Fleet.-The CinC. Fifth Fleet was included in some of the  dispatches of the Second Fleet and is associated with the new Task  Force.
Submarines.-As noted above Commander Submarine Force is in Chichijima  area. The Submarine Squadron NETE5's location is somewhat uncertain  today due to one dispatch being routed to MAIZURU. The routing of this  dispatch is doubted because of the indication of her arrival at Takao  yesterday and her previous association with Cruiser Division Seven.
China.-Two Marus of the Third Fleet left Bako for Sama today.
Third Fleet.-Active as above but no indication of large scale movement  from the Sasebo 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)