| Kikukawa Enterprise Co., Ltd. | Reiwa 5/4/7 |
| Masuya Co., Ltd. | Reiwa 5/4/20 |
| Murata Machinery Co., Ltd. | Reiwa 5/4/20 |
| Miwa Lock Co., Ltd. | Reiwa 5/4/28 |
| Voltech Co., Ltd. | Reiwa 5/4/28 |
| Suzuki Shokan Co., Ltd. | Reiwa 5/4/28 |
| Kawasaki Kinkai Kisen Co., Ltd. | Reiwa 5/5/15 |
| NTT Field Techno Corporation | Reiwa 5/5/17 |
| Murata Manufacturing Co., Ltd. Human Resources Development Department Recruitment Division | Reiwa 5/6/22 |
| Ube Industries Shipping Co., Ltd. | Reiwa 5/6/28 |
| Toba Aquarium Co., Ltd. | Reiwa 5/7/19 |
| Japan Domestic Shipping Association Federation | Reiwa 5/8/25 |
| Asahi Tanker Co., Ltd. | Reiwa 5/9/20 |
| Eyes Co., Ltd. | Reiwa 5/9/25 |
| Japan Ship Engineers Association, General Incorporated Association | Reiwa 5/12/28 |
| Hayakoma Transport Co., Ltd. | Reiwa 5/12/28 |
| i-System Co., Ltd. | Reiwa 5/12/29 |
| Life Techno Service Co., Ltd. | Reiwa 5/12/29 |
| Kawachika Ship Management Co., Ltd. | Reiwa 6/1/10 |
| Chubu Takashuha Kogyo Co., Ltd. Yoshitaka Takahashi | Reiwa 6/1/15 |
| ECL Agency Co., Ltd. | Reiwa 6/1/16 |
| Isewan Shipping Co., Ltd. | Reiwa 6/1/25 |
| Nitto Tag Co., Ltd. | Reiwa 6/1/26 |
| Food Technica Co., Ltd. | Reiwa 6/1/31 |
| Wet Master Co., Ltd. | Reiwa 6/1/31 |
| Biwako Kisen Co., Ltd. | Reiwa 6/1/31 |
| Takasawa Seisakusho Co., Ltd. | Reiwa 6/1/31 |
| Muroo Co., Ltd. | Reiwa 6/1/31 |
| Fuji Trading Co., Ltd. | Reiwa 6/2/2 |
| Mitsui O.S.K. Lines Co., Ltd. | Reiwa 6/2/9 |
| Terratech Co., Ltd. | Reiwa 6/2/20 |
| Comdec Co., Ltd. | Reiwa 6/2/21 |
| Izuma Juuki Co., Ltd. | Reiwa 6/2/22 |
| Tokai Dock Industry Co., Ltd. | Reiwa 6/2/26 |
| Nippon Kaiji Certification Association (General Incorporated Association) | Reiwa June 6th |
| Kagoshima Shipping Co., Ltd. Fujitrans Corporation Co., Ltd. | Reiwa 6/2/29 |
| Sugawara Kisen Co., Ltd. | Reiwa 6/2/29 |
| Mieden Co., Ltd. | Reiwa 6/2/29 |
| Ishiyoshi Gumi Co., Ltd. | Reiwa 6/3/5 |
| Japan Gas Line Co., Ltd. | Reiwa 6/3/8 |
| Mitsukoshi Isetan Property Design Co., Ltd. | Reiwa 6/3/11 |
| Airex Co., Ltd. | Reiwa 6/3/12 |
| Ise Mikawa Bay Pilot District Pilot Association | Reiwa 6/3/15 |
| Goei Civil Engineering Co., Ltd. | Reiwa 6/3/15 |
| All Japan Seamen's Union | Reiwa 6/3/22 |
| Eagle Ship Management Co., Ltd. | Reiwa 6/3/22 |
| Nagoya Kisen Co., Ltd. | Reiwa 6/3/26 |
| Tokyo Keiki Co., Ltd. | Reiwa 6/3/27 |
| Miwa Lock Co., Ltd. | Reiwa 6/3/29 |
| Tabuchi Shipping Co., Ltd. | Reiwa 6/3/29 |
| Misuka Shipping Co., Ltd. | Reiwa 6/3/29 |
| Nippon Express Co., Ltd. | Reiwa 6/3/29 |
| Kaibundo Publishing Co., Ltd. | Reiwa 6/3/29 |
| New Japan Certification Association (General Incorporated Foundation) | Reiwa 6/3/29 |
