Sailing before the wind of technology and experience 40 years with the ocean.

Our company started out from offshore repairs as an affiliate of Maruha Nichiro Holding, Inc. (Former Taiyo Fishery Co., Ltd.) aiming at repairing the vessels owned by the company.After that, we obtained agencies of various engine manufacturers and are expanding business developmentally as a trading company that handles marine equipment and spare parts.
Our company has an engineering department which is designed to provide advice and technology to allow safe and smooth operation of vessels.
Our company also has an affiliated dock which conducts offshore inspections and repair work based on the Ship Safety Law and is growing as a general enterprise engaged in repairs, maintenance and remodeling of vessels.
There are many trading companies that handle spare parts only or repair companies that contract for repairs only in Japan. However, we believe that we are the only company that can handle these services comprehensively.
We will be happy if you consider our company as a total ship’s repair service company that solves docking, supply of spare parts, engineering work, offshore repairs, etc. totally.
Please experience our technological capability once. We are convinced that you will be satisfied with our service.
Finally, we are also a designer and manufacturer of “Hisui,” a water making machine that produces fresh water from seawater using reverse osmotic membrane.
Please feel free to contact us not only for marine use but when water is required in isolate islands, disaster sites, etc.
We are looking forward to serving you.

Takashi Nosaka
President (CEO)

Takashi Nosaka


Trade namePort Relief Engineering Co.,Ltd.
Established24 Feb. 1973
  • 本社外観Head Office
  • 横浜支店外観Yokohama Branch
  • 下関営業所外観Shimonoseki Branch

Head OfficeMAP
1-30-3 Tabatashinmachi, Kita-ku, Tokyo, Japan
TEL : 03-5901-6090 FAX : 03-5901-6085

Yokohama BranchMAP
6-2 Torihama-cho, Kanazaa-ward, Yokohama-City
TEL : 045-773-0202 FAX : 045-773-0204

Shimonoseki BranchMAP
Eiko-Shimonoseki Bldg., 13-22, Kannonzaki-cho, Shimonoseki-city, Yamaguchi
TEL : 083-227-2202 FAX : 083-227-2788

Authorized Capital¥40,000,000 of which ¥10,000,000 has been paid up
DirectorsPresident Takashi Nosaka
Executive Director Junji Chino (Yokohama Branch)
Executive Director Hiroshi Oda (Sales Dep.)
Executive Director  Michio Sekizawa (General Affairs and Accounting Dept.)
Director Masahiko Sugano (Construction Dept.)
Director Shingo Harima (Sales Dept.)
Auditor Kouichi Mizushiro
ShareholderMaruha Nichiro Corporation
BankThe Shoko Chukin Bank, Ltd.
MUFG Bank Ltd.
Mizuho Bank, Ltd.
Japan Finance Corporation (JFC)



Organization on Apr. 2020



February 1973Established as a subsidiary company of Taiyo Fishery Co., Ltd. (Present: Maruha Nichiro Corporation)
Specialized in repair of vessels owned by Taiyo Fishery Co., Ltd. and its related companies.
February 1978Shimonoseki Branch was established for the marketing of various machines in Kanmon District.
July 1982Began to offer the technical training for the foreign trainees in vited by Overseas Fishery Cooperation Foundation.
April 1984Purchased and fully equipped the present Yokohama Main Plant at 6-2 Torihamacho, Kanazawa-ku, Yokohama.
September 1993Exceeded 500 in the sale of HISUI.
April 2007Changed a Yokohama Factory into the Yokohama Branch.
July 2007Purchased a headquarters building and moved a head office to Tabata-Shinmachi, Kita-ku, Tokyo.
Feburuary 2009Consigned as a sales agent of The Hanshin Diesel Works, Ltd. in the territory of Tohoku, Japan.
October 2009Consigned as a sales agent of IHI Power Systems Co.,Ltd.
March 2010Consigned as a sales agent of Akasaka Diesel Ltd. in the territory of Hokkaido, Japan.
October 2011Established a PRE SEOUL office and started sales of engine spare parts for fishing vessels in Korea.
April 2018Consigned as a sole agent of Hitachi Nico Transmission Co.,Ltd.