| Carrier Code | Carrier Name |
| 31AH | HANKYU FERRY CO. |
| 31AI | KAGOSHIMADAIGAKU |
| 31AJ | MOL FERRY CO.LTD. |
| 31AK | SHOUEIKAIUN |
| 31AL | NIPPONSTEEL CORPORATION |
| 31AM | SHINWA DISTRIBUTION CO.,LTD. |
| 31AN | NATIONAL INSTITUTE FOR SEA TRAINING |
| 31AO | HAGIKAIUN |
| 31AP | RYOEISANGYO CO.,LTD. |
| 31AQ | TOYAMAKEN SOGOKYOIKU SENTA |
| 31AS | TOKAI TANKER CO., LTD. |
| 31AT | NAKAJIMAKISEN CO.LTD |
| 31AU | AKIMARINE KABUSHIKIGAISHA |
| 31AV | MARINE TECHNICAL COLLEGE |
| 31AW | TOTTORIKENSUISANSHIKENJO |
