| Abbreviation | Definition |
|---|---|
| ETC | Earthquake Test Center |
| ETC | Erosion Technology And Concentration |
| ETDP | Expert Tsunami Database for the Pacific |
| ETP | Eastern Tropical Pacific |
| EUC | Equatorial UnderCurrent |
| EUROCEAN | Conglomerate of 22 member companies from 6 European nations, concerned with oceanic affairs |
| EUROCEAN | European Centre for Information on Marine Science and Technology |
| EUTELSAT | EUropean TELecommunications SATellite Organization |
| EWW | Equilibrium Wind Wave |
| F | Floater |
| F | Floating |
| FACT | Feasibility Ascension Cape Town |
| FACTS | Facility for the Analysis and Comparison of Tsunami Simulations |
| FACTS | Florida Atlantic Coast Transport Study |
| FAD | Fish Aggregating Device |
| FAD | Fish Attracting Device |
| FAD | For A Day |
| FAMA | Freshwater And Marine Aquarium |
| FAMOUS | French-American Mid-Ocean Undersea Study |
| FAO | Flatland Atmospheric Observatory |