Who was Tatsuo Shimabuku?

Tatsuo Shimabuku (1908-1975) was the Okinawan karate master who founded Isshin-ryu karate in 1956. He taught many U.S. Marines stationed on Okinawa, who spread the style across the United States.

When was Isshin-ryu founded?

Shimabuku announced Isshin-ryu to his students on 15 January 1956.

Who were Tatsuo Shimabuku's teachers?

Chotoku Kyan, Chojun Miyagi and Choki Motobu, with later weapons training under Shinken Taira.

When did Tatsuo Shimabuku die?

He died of a stroke in Agena, Okinawa, on 30 May 1975, aged 66.

Tatsuo Shimabuku, 1908–1975: Isshin-ryu and the Marines Who Carried It Home

Tatsuo Shimabuku founded Isshin-ryu karate in Okinawa in 1956 and taught much of it to young U.S. Marines on short tours of duty. They took it home, and it spread across America through the schools they opened. He died in Okinawa on 30 May 1975, aged 66. He had handed over leadership to his son three years earlier.

Full name: Tatsuo Shimabuku; born Shinkichi Shimabuku
Born: 19 September 1908, Gushikawa village, Okinawa
Died: 30 May 1975, Agena, Okinawa, aged 66, of a stroke
Art: Isshin-ryu karate, founded 15 January 1956
Trained under: Chotoku Kyan (Shorin-ryu); Chojun Miyagi (Goju-ryu); Choki Motobu; later Shinken Taira (kobudo)
American students: Including Don Nagle, Harold Long, Steve Armstrong, Harold Mitchum and Toby Cooling
Successor: His son, Kichiro Shimabuku, from his retirement in 1972

Three teachers, one style

Shimabuku was the first of ten children in an Okinawan farming family, and began karate as a boy under an uncle. He went on to train under three of the most important Okinawan teachers of the century: Chotoku Kyan, in Shorin-ryu, for roughly a decade from the late 1920s; Chojun Miyagi, the founder of Goju-ryu; and Choki Motobu. In later years he also studied weapons under Shinken Taira. He took the name Tatsuo, “dragon man,” as his professional name.

On 15 January 1956 he announced a new style to his students: Isshin-ryu, “one heart way,” combining what he had learned from Shorin-ryu and Goju-ryu with kobudo weapons. Shimabuku attributed its inspiration to a dream of a goddess, the Isshinryu no Megami, who remains the style’s emblem. The style is known for its vertical punch, among other departures from tradition. Those changes cost him: many of his Okinawan students left, including his brother Eizo, and some Okinawan masters later withdrew their approval.

The Marines

From 1955 Shimabuku taught members of the U.S. Third Marine Division stationed on Okinawa. It was an unusual market: young men who would train intensively for a tour of a year or two and then go home. Many of the first Americans to earn black belts from him, among them Don Nagle, Harold Long, Steve Armstrong and Harold Mitchum, opened schools in the United States, and their students opened more. Isshin-ryu spread through America in large part through the Marine Corps.

Shimabuku visited the United States himself, in 1964, when he taught in Pittsburgh, and in 1966, when he toured several cities and promoted Armstrong, Long and Nagle to eighth degree. Toby Cooling, who trained with him in Okinawa in 1969 and 1970, recalled being told to go back to the States and teach good Isshin-ryu.

Retirement and death

Shimabuku retired early in 1972 and passed leadership of Isshin-ryu to his son, Kichiro Shimabuku. He died of a stroke on 30 May 1975 in Agena, Okinawa, aged 66. American Isshin-ryu has since organized itself into many independent associations, many of them founded by his American students or their students.

What a school owner should take from Tatsuo Shimabuku

Shimabuku found a distribution channel no one else was using. Teaching Marines meant teaching students who would carry the art across the country. The school owner equivalent is the student who moves away, the instructor who opens a second location, the member who tells a new town about you. Train them well and they build your reputation where you will never go.

He also shows that innovation has a cost at home. His changes lost him students and the approval of his peers in Okinawa. They also produced a style clear and distinctive enough to travel. An owner who changes his curriculum should expect some of the old guard to leave.

And he settled his succession while he was alive, retiring in 1972 and naming his son. The founders in this archive who did that fared better than those who did not.

Quick answers

Who was Tatsuo Shimabuku?: Tatsuo Shimabuku (1908–1975) was the Okinawan karate master who founded Isshin-ryu karate in 1956. He taught many U.S. Marines stationed on Okinawa, who spread the style across the United States.
When was Isshin-ryu founded?: Shimabuku announced Isshin-ryu to his students on 15 January 1956.
Who were Tatsuo Shimabuku’s teachers?: Chotoku Kyan, Chojun Miyagi and Choki Motobu, with later weapons training under Shinken Taira.
When did Tatsuo Shimabuku die?: He died of a stroke in Agena, Okinawa, on 30 May 1975, aged 66.

Sources, and what we could not confirm

Sources: the English Wikipedia biography of Tatsuo Shimabuku and its cited sources, for his birth, teachers, the founding of Isshin-ryu, his Marine students, his visits to the United States, his retirement, succession and death; and our own profile of Toby Cooling for Cooling’s training with him.

Conflicts printed rather than smoothed over. The dates and length of his training with each teacher differ between sources. His son’s surname is written Shimabuku and Shimabukuro. Accounts differ on whether another senior student was considered as successor.

Not independently documented. The story of the dream, which is his own; and the details of the Okinawan masters’ approval and its withdrawal. Rank claims made by and for his American students are outside the scope of this profile.

Corrections. See our editorial policy. If you trained under Shimabuku, we want to hear from you.