Management philosophy
We aim to improve our work efficiency through untiring efforts to develop self-technology, show appreciation to shareholders for their support and protect our employees' living, contributing to society.
Outline
| Company | KOJIMAGUMI Co., Ltd. | Capital | 90,000,000 JPY |
|---|---|---|---|
| Head office | 〒455-0021 1-6 Kiba-cho, Minato-ku, Nagoya, Aichi, Japan 455-0021 TEL: +81 52 691 7040 |
Settlement | May annually |
| Established | Jun, 1919 | Representative | President, Representative Director Tokuaki Kojima |
| Reorganized | Dec. 1941 | Number of employees |
204 (As of May, 2024) |
| Business | Dredging/reclamation, civil engineering works and related activities | Constructor Register No. |
Licence obtained by Minister of the Ministry of Land, Infrastructure, Transport and Tourism (Special)26-3337 Work type Civil engineering/scaffolding paving/dredging |
Milestone
| 1919 | Jun. | Establish in Ueno-village, Chita-county, Aichi (Current Nawa-machi, Tokai-city) |
| 1941 | Dec. | Reorganize (Capital 198,000 yen) |
| 1948 | Apr. | Start dredging (Horikawa river dredging) |
| 1954 | Mar. | Build a wooden grab dredger (1 RYOSEI MARU) |
| 1957 | Sep. | Move office to current location |
| 1959 | Mar. | Build a steel grab dredger (10 RYOSEI MARU) |
| 1963 | Mar. | Increase the capital to 18,000,000 yen |
| 1967 | Apr. | Open Tokyo branch |
| 1970 | Jun. | Build an anchorless grab dredger (61 RYOSEI MARU) |
| 1975 | Mar. | Patent anchorless moving equipment (2 Spuds) |
| Nov. | Increase the capital to 36,000,000 yen | |
| 1984 | Jul. | Open Osaka branch |
| 1985 | Sep. | Build a hydraulic counter weight balance system grab dredger (261 RYOSEI MARU) |
| 1988 | May. | Increase the capital to 80,800,000 yen |
| 1993 | Jul. | Build an air pressure transfer vessel (Air pressure vessel) (AP 1000 RYOSEI MARU) |
| 1995 | Jul. | Build a mega grab dredger (200m3 Grab bucket) TOSHO |
| 2000 | May. | Build a second mega grab dredger (200m3 Grab bucket) GOSHO |
| 2004 | Aug. | GOSHO & TOSHO complete Nakayama channel dredging |
| 2008 | Oct. | First overseas dredging project in Saudi Arabia (GOSHO) |
| 2012 | Apr. | First African dredging project in Republic of South Africa (TOSHO) |
| Sep. | Increase the capital to 90,000,000 yen | |
| 2014 | Jun. | First South East Asian dredging project in Singapore (661 RYOSEI MARU) |
Branch/Service office
Tokyo branch
Tokyo branch
Hacchobori Chishima Bldg. 6F, 3-22-11Hacchobori, Chuo-ku, Tokyo 104-0032
TEL +81 3 3297 1681
Osaka branch
Osaka branch
Sando Bldg. 2F, 1-24-5, Himesato, Yodogawa-ku, Osaka 555-0025
TEL +81 6 6477 1161
Yokohama service office
Yokohama Bldg., 3-9 Kaigandori, Naka-ku, Yokohama, Kanagawa 231-0002
TEL+81 45 201 7016
Ibaraki service office
Fujihiro Bldg., 217-2 Kyuchu, Kashima, Ibaraki 314-0031
TEL +81 299 83 8799
Chita service office
8 Suzaki, Nawa-machi, Tokai, Aichi 476-0002
TEL +81 52 601 0169
Tokoname service office
1-95 Shinkai-cho, Tokoname, Aichi 479-0837
TEL +81 569 34 9793
Nagoya servise office
4-113 Higashioki-cho, Nakagawa-ku, Nagoya, Aichi 454-0935
TEL +81 52 389 2351
Kyushu service office
Voice Hakata Bldg. 508, 1-7-14 Hakataeki-minami, Hakata-ku, Fukuoka, Fukuoka 812-0016
TEL +81 92 477 7005
Logo
Our founder Ryoichi Kojima once served as a chairman for Ueno (current Tokai-city) town assembly. And the letter "Ryo" from his first name was branded on shovel and other civil engineering work equipments. That is said to be the origin of this logo. Then after being demobilized from the WW2, the third president Akio Kojima (deceased) improved the design by adding the symbol color blue as in the beautiful ocean that surrounds Japan. Heishu Hosoi (born in current Tokai-city), who was a mentor of Yozan Uesugi, Yonezawa's (Yamagata prefecture) lord of feudal clan and a renowned Confucian scholar in Edo era, being greatly respected at his birth town, said "All of learning, thinking and acting together complete the good." That also expresses the core philosophy of our company, which is aiming to contribute to the society through learning on site, thinking and acting.
Group
NIHON KOWAN KENSETSU Co., Ltd.
President, Representative Director Shinichi Isoyama
Toyoken Bldg. 4F, 2-16-13 Tenma, Atsuta-ku, Nagoya,
Aichi, Japan 456-0034
TEL +81-52-683-7335
https://www.nihonkk.co.jp/
DAMDRE Co., Ltd.
President, Representative Director Tsutomu Sato
Yaesu No.3 Nagaoka Bldg. 6F, 3-22-11Hacchobori, Chuo-ku, Tokyo, Japan
104-0032
TEL +81 3 5542 3530
PACIFIC MARINE JAPAN Co., Ltd.
President, Representative Director Takahiro Kojima
1-6 Kiba-cho, Minato-ku, Nagoya, Aichi, Japan 455-0021
TEL +81 52 691 7288
KR DREDGING CO., LTD
CEO Steeve S.Ryoo
6F Busan Shipyard Bldg, 1, Haeyang-ro 15, Yeongdo-gu, Busan, Korea
TEL +82-51-441-0801