Brief History

1908

Founded

1912

Established Tsurumi Umetate Kumiai(Tsurumi Reclamation Association)

1913

Purchased Electric-Pump Dredger(350ps) from England Started developing Tsurumi-Kawasaki Coastal Industrial Areas(Kanagawa Prefecture, Japan)

1914

Established Tsurumi Marine Works Co., Ltd.

1920

Established Tokyo Bay Marine Works Co., Ltd.

1928

Completed Tsurumi-Kawasaki Coastal Industrial Areas

1944

Changed Corporate Name to Toa Kowan Kogyo Co., Ltd.
Merged with Kouwan Kogyo Co., Ltd.

1949

Listed stocks on the Tokyo Stock Exchange

1962

Built Japan's largest cutter suction dredger, Asia Maru with diesel engine (7,000ps)

1963

Opened International Division and Singapore Office

1964

Received order of the first international project in Singapore

1967

Opened Indonesia Office

1970

Opened the Research and Development Center

1973

Changed the name to TOA Harbour Works Co., Ltd.
(Japanese Corporate Name to TOA Kensetsu Kogyo Co., Ltd.)

1987

Changed English name to TOA CORPORATION

1995

Opened Philippine Office

1996

Opened Viet Nam Office

1999

International Division is certified under ISO9001
Introduced the executive officer system

2002

Operation alliance with Ando Corporation Co., Ltd.
International Division is certified under ISO14001

2003

International Division is certified under OHSAS18001

2006

Opened UAE Office
Established the Corporate Compliance Rules

2007

Opened Sri Lanka Office

2008

Celebrated 100 years anniversary
Established the CSR Promotion Committee and the CSR Promotion Department