TOKYO, Thursday, July 7 (AP) – The death of Admiral Isamu Takeshita" one-time Commander in Chief of the combined Japanese fleet, was reported today. He died of a heart attack at the age of 80.
    Admiral Takeshita was born a Yamamoto, but adopted by the Takeshita family. He was graduated from the Japanese Naval Staff College and became a. commander in 1907 and a rear admiral in 1913. Later he commanded the war vessels Suma, Kasuga and Izumo. He was Chief of Staff of the First Japanese Fleet before becoming Commander in Chief.
    While in the Japanese Navy, about the turn of the century, he taught the art of jiu-jitsu to President Theodore Roosevelt. His experience of Japanese wrestling later brought his appointment as chairman of the Dai Nippon Wrestling (Sumo) Association.
    In 1935 he headed a group of five retired Japanese military and naval officers who visited this country on a good-will mission representing the Japanese Ex-servicemen's Association. He made many speeches on tolerance and the horrors of war at that time, but during the recent conflict he broadcast threats to sink the American and British fleets.