| Abbreviation | Definition |
|---|---|
| RKY | Rocky |
| RLJ | Range Lights on the Kennebec River |
| RMT | Rectangular Midwater Trawl |
| RMZ | Riparian Management Zone |
| RNN | Regional NOCN Node |
| RNZN | Royal New Zealand Navy |
| ROIP | Radar Ocean Imaging Programme |
| ROM | Regional Oxidant Model |
| ROMS | Regional Ocean Modeling System |
| ROPOS | Remotely Operated Platform for Ocean Science |
| ROSE | Rural Oxidants in the Southern Environment |
| ROV | Relative Ocean Volume |
| ROV | Remotely Operated Vehicle |
| RPG | Radar Product General |
| RPH | Roll Pitch and Heave |
| RPM | Regional Particulate Model |
| RR | Risk Reduction |
| RRS | Royal Research Ship |
| RS | Remote Sensing |
| RSD | Ross Sea Disconformity |