Diamond Sponsor
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| The Service Center of Port Engineering |  |
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| The Service Center of Port Engineering | |
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| The Overseas Coastal Area Development Institute of Japan (OCDI) |  The Ports and Harbours Association of Japan |
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| FISHERIES INFRASTRUCTURE DEVELOPMENT CENTER | JFE Steel Corporation | NATIONAL ASSOCIATION OF FISHERIES INFRASTRUCTURE |
| Seibu Polymer Corporation | SHIBATA INDUSTRIAL CO.,LTD. | The Japan Harbor Transportation Association |
| The Japanese Institute of Fisheries Infrastructure and Communities |
| Hitachi Zosen Corporation | IHI Corporation | JFE Engineering Corporation | Kawada Industries, Inc. |
| Kobe Steel, Ltd. | MIYAJI ENGINEERING CO., LTD. | MM BRIDGE CO., LTD. | Nippon Slag Association |
| NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD. | Yokogawa Sumikin Bridge Corp. |
| Aichi Steel Corporation | Alpha Hydraulic Engineering Consultants Co.,Ltd. | Association for Innovative Technology on Fishing Ports and Grounds | Central Consultant Inc. |
| Chuden Engineering Consultants | CHUO FUKKEN CONSULTANTS CO.,LTD. | CLOVER-ENGINEERING | Daido Steel Co., Ltd． |
| Data Technical Research Institute Incorporated company | DRAM Engineering, Inc. | ECOH CORPORATION | Eight-Japan Engineering Consultants Inc. |
| GOSEI CO., LTD. | IDEA Consultants, Inc. | Japan Port Consultants, Ltd. (JPC) | Kokusai Kogyo Co., Ltd. |
| KSF：Kumashiro System Frontier Co.,Ltd. | KYODO ENGINEERING Co.,Ltd. | Marine Technology Co.,Ltd. | Mitsui Consultants Co., Ltd. |
| Mitsui E&S Steel Structures Engineering Co.,Ltd. | NEWJEC Inc. | Nippon Civic Consulting Engineers Co., Ltd. | Nippon Data Service Co.,Ltd. |
| NIPPON ENGINEERING CONSULTANTS CO., LTD. | Nippon Koei Co., Ltd. | Nishiki Consultant Co.,Ltd | Nisshin Steel Co., Ltd. |
| North Japan Port Consultants Co., Ltd. | Ocean Conslultant Japan Co., LTD | ORIENTAL CONSULTANTS Co.,Ltd. | PACIFIC CONSULTANTS CO., LTD. |
| PORT CONSULTANT Co., LTD. | SANYO CONSULTANTS Co.,Ltd. | SANYO TECHNO MARINE | Tamano Consultants Co., Ltd. |
| The Japan Fishing Port Construction Association | THE JAPAN STEEL WORKS,LTD. | TOKO ENGINEERING CONSULTANTS, LTD. | Tokyo Electric Power Services Co., Ltd. |
| Topy Industries, Ltd. | Yachiyo Engineering Co., Ltd. | Yodogawa Steel Works, Ltd. |