Message from CEO

SKK Corporation CEO Seigo Ushimado

SKK was founded in 1956 as a marine crane manufacture in Kochi City, Kochi Prefecture in the beginning of high economic growth in Japan.

We have developed marine cranes focusing on client’s needs taking advantage of our distinctive features “Custom-Made” for over 60 years since we founded. We have provided various products required for marine construction to our clients through Japan and overseas.

The need for marine cranes is also increasing overseas with the rapid economic growth of Asian countries. We are continually searching for more effective ways to meet and satisfy client’s needs in overseas as well.

We, SKK, keep growing to be a community-based company that is needed by society.

SKK Corporation
CEO
Seigo Ushimado

Corporate Philosophy
We contribute to enrich the lives of the people and the culture
through business related to marine and land development. We
strive to develop our business and achieve the prosperity of our
company as well as all employee’s well-being.
Company Creed
‘Harmony’ ‘Integrity’ ‘Responsibility’
SKK Goal
No.1 Marine Crane Manufacturer in the World

Company Profile

Head Office & Factory

Head Office & Factory

Tadotsu Factory

Tadotsu Factory

Company Name SKK Corporation
(Former company name:Shikoku Kenki Corporation)
Address
(Head office)
1-3 Yokohama-Nishimachi, Kochi-City, Kochi,Japan 781-0242
Address
(Tadotsu Factory)
12 Nishiminatomachi, Tadotsu-cho, Nakatodo-gun, Kagawa, Japan 764-0017
Representative Phone Number +81-88-842-6262
Founded 1956
Share Capital 220 Million Yen
Number of Employees 109 (as of April 2019)
Main Business

Design, manufacture, sale and repair service of marine cranes and marine construction machineries

<Products>
Grab Dredging Crane・Floating Crane ・Piling Crane
Small Type Marine Crane・Reclaimer
Vessel Winch ・Spud
Grab Buckets
Construction Machineries

Subsidiary Sanyo Kogyo Corporation (Machining Company),
SK Transport Corporation
ISO 9001
ISO 9001

SKK is certified with ‘ISO 9001/Class NK’.
ISO9001 is a standard for quality management system certified by the International Organization for Standardization (ISO), and specifies quality of manufacturing process and working environment.
Class NK is certified by Japan Accreditation Board (JAB) and Raad voor Accreditatie (RvA) in the Netherlands.

Access

Head Office & Factory

1-3 Yokohama-Nishimachi, Kochi-City, Kochi, Japan 781-0242

View larger map

History

Crane

August 1956 Founded Shikoku Kenki Corporation (The initial capital of 1,000,000 yen and 9 employees)

October 1956 Shipped the First Crane (0.5㎥ Dredging Full Slewing Crane)

March 1964 Opened second factory in the Head Office (Installed High Frequency Hardening Machineries)

December 1964 Invested by Osaka Small and Medium Business Investment & Consultation Co., Ltd.

October 1967 Exported 20DH type Grab Dredger to Taiwan (the First export)

April 1972 Developed the Electric Motor Drive Type Crane

Dredging Full Slewing Crane

0.5㎥ Dredging Full Slewing Crane

Electric Motor Drive Type Crane

Electric Motor Drive Type Crane

November 1972 Developed the Torque Converter Omega Clutch Drive System

April 1974 Started exports of Large-sized Grab Dredgers to China

November 1975 Opened Factory in Tadotsu (Kagawa prefecture)

Large-sized Dredgers to China

Large-sized Floating Crane to China

Factory in Tadotsu(1975)

Factory in Tadotsu(1975)

February 1976 Manufactured an 800 ton lifting Full Slewing Crane as a subcontractor of Clyde Crane and Engineering Co.

February 1983 Developed All Pneumatic Operating Crane for gravel

February 1985 Developed DT-F Type for multi-purpose use

September 1985 Developed Energy-saving Type 20 ㎥ Grab Dredging Crane

January 1986 Started sales of small GDA Type Crane with booster system

small GDA Type Crane

small GDA Type Crane

March 1987 Opened second factory in Tadotsu (Kagawa prefecture)

May 1988 Started sales of 2000GE Grab Dredging Crane with Reclaimer

November 1988 Developed Energy Saving Type 50㎥ Grab Dredging Crane (The Largest Type in Japan)

December 1991 Moved to New Head Office

Energy Saving Type 50㎥ Dredging Crane

Energy Saving Type 50㎥ Dredging Crane

New Head Office(1991)

New Head Office(1991)

September 1993 Started sales of Human Touch DT-N Series

October 1996 Started sales of L Series
The 40th Anniversary of Foundation. Changed company name to SKK Corporation

DT-N Series

DT-N Series

The 40th Anniversary of Foundation

The 40th Anniversary of Foundation

March 1998 Started sales of LAX Series (Pneumatic Type, 2 Levers operation)

September 2000 Acquired ISO9001

November 2005 Started sales of the K Series

September 2007 Developed Cable Brake System (Water-cooling Brake)

June 2008 Developed Spud System

September 2008 Developed Pile Drive Leader

Pile Drive Leader

Pile Drive Leader

March 2009 Exported Multi-Purpose Piling Crane to Australia

November 2011 Manufactured 600t Floating Crane with Pile Drive Leader

Multi-Purpose Piling Crane

Multi-Purpose Piling Crane

600t Lifting Crane with Pile Drive Leader

600t Lifting Crane with Pile Drive Leader

April 2012 Manufactured Multi-purpose 500t Floating Crane

June 2013 Started sales of LEX Series (Electric Type, 2 Levers operation)

Multi-purpose Lifting Crane

Multi-purpose Lifting Crane

LEX Series

LEX Series

November 2013 Developed All-Electric Drive Hybrid Grab Dredging Crane

July 2014 Developed Hybrid 30㎥ Grab Dredging Crane

August 2016 The 60th Anniversary of Foundation

March 2019 Opened Third Factory in Tadotsu (Kagawa Prefecture)

Hybrid Grab Dredging Crane

Hybrid Grab Dredging Crane

Third Factory in Tadotsu

Third Factory in Tadotsu