| No. | Vessel Name | Call sign | carrier Code(NACCS Code) | NACCS user ID |
| 4021 | ISHIZUCHI | 3ESS5 | MOLU | 3BMUK |
| 4022 | ISLA DE CEDROS | VRXU2 | 31EU | 3ZNGU |
| 4023 | ISLAND GREEN | VRFU3 | 11AH | 4DTRG |
| 4024 | ISLAND SPIRIT | 3FEO8 | NYKG | NANEC |
| 4025 | ISLANDER | PBKN | KMTU | 8BNAR |
| 4026 | ISMINAKI | H8YV | 13VQ | 2PMRZ |
| 4027 | ISOLDE | SLKB | 12UU | 3PKWK |
| 4028 | ISP 1 | HSB4500 | 32BN | 3ASEN |
| 4029 | ISS BREEZE | 9V7605 | DCTY | 6BSNM |
| 4030 | ISS SPIRIT | 9V7097 | 13QY | 8EAKK |
| 4031 | ISTORYA | DUDX | 11AH | 4BTKH |
| 4032 | ISTRA | 9AA8148 | 13JP | 2PMRZ |
| 4033 | ISTRA ACE | C6WE7 | MOLU | 2CMOL |
| 4034 | ISUZU | 3FSN6 | 13EH | 4GYKC |
| 4035 | ISUZUGAWA | 7JJT | 12GG | 2BPMS |
