The Gyosen Hoken Chuo-kai

Japan Shipbuilding Subcontractors' Association

Japan Marine Standards Association

Japan Ship-Machinery Quality Control Association

The Japanese Shipowners' Association

Nippon Kaiji Kyokai (NK)

The Ship's Electric Installation Contractors' Association of Japan

The Shipbuilders' Association of Japan

The Shipbuilding Research Association of Japan

Steel-Castings and Forgings Association of Japan

Marine Engine Service Association of Japan & other 12 bodies