| Abbreviation | Definition |
|---|---|
| GBE | Gun Boat Energy (Boom Beach) |
| GBSA | Greenwich Bay Sailing Association |
| GDBC | Georgina Dragon Boat Club |
| GDBC | Glenmaggie and District Boat Club |
| GDEB | General Dynamics Electric Boat |
| GGBC | Goring Gap Boat Club |
| GIT | Graphite Innovation & Technologies |
| GLSBC | Great Lakes Steel Boat Club (Ecorse, MI) |
| GNBC | Greater Niagara Boating Club |
| GOST | Global Offshore Sailing Team |
| GRT | Gross register tonnage |
| GSS | Glover Sailing Ship |
| GUBC | Glasgow University Boat Club |
| GWSC | Grafham Water Sailing Club |
| HBY | Hanko Boat Yard |
| HCBC | Hatfield College Boat Club |
| HCBC | Hertford College Boat Club |
| HCBC | Homerton College Boat Club |
| HHSA | Herrington Harbour Sailing Association |
| HIN | Hull Identification Number |