History of the company

17th of March 1958　　　　　　 The Company has founded and it paid 110,000,000yen in capital.
25th of August 1958　　　　　　 The Company has started ship building and ironworks.
20th of May 1963　　　　　　　　The Company has added new purposes on the Statute.The new
　　　　　　　　　　　　　　　　　　　purposes are makin cans, civil engineering and construction work and 

　　　　　　　　　　　　　　　　　　　making tanks.

8th of June 1964　　　　　　　　 The Company has received license for registered constructor.
1st of November 1966　　　　　The Company had build factory in Sapporo's ironworks area. The
　　　　　　　　　　　　　　　　　　　Company hadstarted making cans, civil engineering and construction, 　　　　　　　　　　

　　　　　　　　　　　　　　　　　　　steel-frame bridge construction work and making tanks.
14th of August 1967　　　　　　 The Company has received license for heavy vehicles' naintenance 

　　　　　　　　　　　　　　　　　　　 works.
30th of June 1972　　　　　　　　 The graving dock for 1,900 ton class vessels had opened.
20th of February 1975　　　　　 The Company has started works for salvage.
31st of January 1985　　　　　　 The Company had closed the factory at Sapporo.
1st of February 1985　　　　　　 The Company had opened the sales office at Sapporo.
10th of November 1989　　　　　The Company had enlarged the graving dock to 108m in total

　　　　　　　　　　　　　　　　　　　　length, 18.5m in width, and depth is -5.5m, and Capacity of

　　　　　　　　　　　　　　　　　　　　within 3 hours. The dock can accept 3,200 ton class vessels.
 6th of December 1999　　　　　 The Company had enlarged the graving dock again. The dock can 

　　　　　　　　　　　　　　　　　　　　accept 4,000 ton class vessels.
 13th of September 2005　　　　 The Company get floating dock 《SOKAI》.

 24th of October 2012　　　　　　Certification get Obtaining ISO 9001:2008 (NJQ-333 registration 

　　　　　　　　　　　　　　　　　　　　number) 
 19th of June 2017     　　　　　　 The shift certification. I shift to ISO 9001:2015

《SOUKAI》

1.《SOUKAI》　Out line  

The mother ship consists of pontoon and one control tower in the one with the loading ability 4,500 ton, and has set up the preliminary buoyancy tank to supplement an opposite gunwale the lack of the buoyancy to obtain the stability when hull does the subsidence surfacing.
  As the feature, the central watch board is set up in the control tower, the ballast tank of the building slip is divided into 16 watertight subdivision, and each tank is controlled, and the amount of pouring water and the displacement can be observed at the center and it comes to be able to control the building slip horizontally by the remote, concentrated automatic control method.
  Moreover, it has the area of building slip 48m*33m in the production of the caisson, and one dynamo is set up as 2 jib cranes and motive power for the hanging crowding such as the type frame reinforced concretes.
  The mother ship was designed by thinking about safe secession of working improvement and the caisson like the above-mentioned, floating dock of non-type ,that is, the caisson fabricating barge.

2. 《SOUKAI》　The main size etc.

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