| Company Name | URL |
|---|---|
| All Japan Seamen's Union | http://www.jsu.or.jp/ |
| China Classification Society Osaka Branch (略称CCS) | http://www.ccs.org.cn/ |
| Consulate General of REPUBLIC of PANAMA | http://www.embassyofpanamainjapan.org/ |
| Frontiers Ltd | http://pws.prserv.net/frontiers/ |
| General Federation of Coastal Vessels Association | http://www.zenkaiun.or.jp/ |
| Japan Association of Foreign trade Ship Agencies | http://www.jafsa.jp/ |
| Japan Captains' Association | http://www.captain.or.jp/ |
| Japan Coastal Tanker Association | |
| Japan Domestic Ship Owners’Association | |
| Japan Federation of Coastal Shipping Associations | http://www.naiko-kaiun.or.jp/ |
| Japan Marine Engineers’ Association | http://www.marine-engineer.or.jp/ |
| Japan Marine Science Inc. | http://www.jms-inc.jp/ |
| Japan Maritime Public Relations Center | http://www.kaijipr.or.jp/ |
| Japan Oil, Gas and Metals National Corporation | http://www.jogmec.go.jp/ |
| Japan Ship Managers Society | |
| Kondo Marine Memorial Faundatian | http://www.kondouzaidan.com/ |
| Liberian International Ship & Corporate Registry | http://www.liscr-j.com |
| Nagoya Port Terminal Public Corporation | http://www.nptc.or.jp/ |
| Nihon Coastal Tug Association | |
| Nippon Kaiji Kyokai | http://www.classnk.or.jp/ |
| The Japan Association of Marine Safety | http://www.nikkaibo.or.jp/ |
| Tokyo Port Terminal Corporation | http://www.tptc.co.jp/ |
| Yamagata Maritime Institute | http://www.ymf.or.jp/ |
| Yokohama Port Management Corporation | http://www.yokohamaport.co.jp/ |
| Zenkoku Naiko Yuso Kaiun Kumiai |