| Carrier Code | Carrier Name |
| NFKS | NORFOLK SHIPPING CORP C/O METROFIN LTD SHIP OPERATIONS |
| NFSH | NORTH FLORIDA SHIPPING INC |
| NFTA | NAFTA SHIPPING COMPANY LIMITED |
| NGAL | NIGERIA AMERICA LINE LIMITED |
| NGLL | NORTH GERMAN LLOYD |
| NGOU | NATURAL GAS ODORIZING INC |
| NGSU | NIGERIAN STAR LINE |
| NGXY | NEWGALAXY SHIPPING LTD |
| NHGR | NORTHANGER SHIPPING CORPORATION |
| NHIU | NORSE HYDROGAS |
| NICU | NIC LEASING INC |
| NIOS | NIEMETH, OSCAR TOWING INC |
| NISC | NICAMAR SHIPPING COMPANY INC |
| NISH | NISSHO SHIPPING CO LTD |
| NISS | NISSUI SHIPPING CORPORATION |
