A notice to mariner (NTM) is a navigational term used in marine navigation to inform seafarers of any changes or updates that may affect the safety of their voyage. It is a formal written document issued by relevant maritime authorities, such as hydrographic offices or coastguards, to provide important information regarding navigational aids, charts, and hazards at sea.
The purpose of a notice to mariner is to provide mariners with essential navigation data, including updates on coastal surveys, new navigational charts, changes to existing charts, and information regarding dangerous wrecks, obstructions, or other navigational hazards. NTMs also communicate changes to navigational buoys, lights, and beacons, as well as updates on tidal information, magnetic variations, and any other essential data necessary for safe navigation.
The notice to mariner is typically issued on a regular basis, and it is vital for mariners to keep themselves informed of these notices to ensure they have the most up-to-date information before embarking on a voyage. It is a fundamental part of a mariner's responsibility to stay current with NTMs, as failure to do so may lead to navigational errors, accidents, or potential danger to the crew, vessel, or environment.
Overall, the notice to mariner plays a crucial role in enhancing maritime safety by informing seafarers of changes, updates, and potential hazards that may affect their navigation, enabling them to plan and execute their voyages more efficiently and securely.
