Maritime Glossary
Source-cited definitions for shipping, engineering, navigation, and regulatory terminology. Confidence-scored and verified against primary IMO, IHO, and industry sources.
- General AverageGA
- A maritime law principle requiring all parties in a sea venture to proportionally share losses from a voluntary sacrifice made to save the voyage.
- legalcommercialinsurancehigh confidence
- Global Maritime Distress and Safety SystemGMDSS
- The internationally agreed suite of communications equipment and procedures for maritime distress, urgency, and safety communications.
- safetynavigationregulationhigh confidence
- Gross TonnageGT
- A dimensionless measure of a ship's total enclosed volume, used as the basis for port dues, crew regulations, and convention applicability thresholds.
- vessel-measurementsregulationhigh confidence