Maritime Glossary
Source-cited definitions for shipping, engineering, navigation, and regulatory terminology. Confidence-scored and verified against primary IMO, IHO, and industry sources.
- MARPOLInternational Convention for the Prevention of Pollution from Ships
- MARPOL is the International Convention for the Prevention of Pollution from Ships, the main IMO treaty controlling pollution of the sea by ships. Adopted in 1973 and modified by a 1978 protocol, it is organised into six technical annexes covering different pollutant streams.
- regulationenvironmentpollutionhigh confidence
- Maritime Labour ConventionMLC 2006 · MLC
- The MLC is the Maritime Labour Convention, 2006, an International Labour Organization treaty often called the seafarers' bill of rights. It sets minimum standards for seafarers' working and living conditions across the world fleet.
- seafarersregulationwelfarehigh confidence
- Maritime Mobile Service IdentityMMSI
- An MMSI is a Maritime Mobile Service Identity, a unique nine-digit number that identifies a ship or a coast station in digital maritime radio communications. It is used by AIS, digital selective calling and other GMDSS equipment to address and identify stations.
- navigationsafetyregulationhigh confidence
- MasterCaptain · commanding officer
- The master is the captain of a merchant ship, the officer in overall command, with ultimate authority and responsibility for the safety of the vessel, everyone aboard, the cargo and the protection of the environment. The master holds overriding authority in an emergency.
- seafarersmanagementlegalhigh confidence
- Methanol (Marine Fuel)bio-methanol · e-methanol · green methanol
- Methanol is an alternative marine fuel: a liquid alcohol that burns more cleanly than heavy fuel oil, producing little sulphur or particulate matter. When made from renewable sources as green methanol, it offers a pathway to lower carbon emissions from shipping.
- fueldecarbonizationengineeringhigh confidence