| Carrier Code | Carrier Name |
| RUTN | RUBY TANKER CORPORATION |
| RUTT | RUSSELL TOWING AND TRANSPORTATION CO |
| RVLE | REVELLE SHIPPING AGENCY INC |
| RVLG | RIVER LOGGING COMPANY |
| RVLO | RIVER LOGISTICS INC |
| RVMR | RIVAMAR TRADING S A |
| RVQA | RIVIERA SHIPPING LTD |
| RVRI | RIVERSIDE SHIPPING INC |
| RVSR | RIVTOW STRAITS |
| RVWY | RIVERWAY BARGE |
| RWDS | REWARD SHIPPING LIMITED |
| RWMI | RIDGEWAY MARITIME INC |
| RWNA | RIDGEWAY NORTH AMERICA LIMITED |
| RWSL | RIVTOW STRAITS LTD |
| RXNA | ROXANA SHIPPING S A |
