Glossary Archive

Pronounced: LEE-mah The term for the letter L in the NATO Phonetic Alphabet.

A rope used on a boat for various purposes, such as securing the vessel to a mooring (mooring line), adjusting sails (halyard or sheet), towing another boat (tow line), or for safety purposes (lifeline). Lines are essential tools on a boat and come in different materials, lengths, and thicknesses depending on their intended use.

Navigational lines drawn on a chart, each representing a possible location of a vessel based on a single observation or measurement.  A line of position (LOP) is a fundamental concept in marine navigation used to determine a vessel's location. It is a line on a nautical chart along which a ship is known to be...

A permanent lean to one side or the other

The condition of a vessel leaning to one side due to an imbalance in weight or external forces.  A vessel lists when it tilts to port or starboard due to an uneven distribution of weight, such as cargo, fuel, or ballast, or as a result of flooding. Unlike rolling, which is a temporary motion caused...

Flag semaphore indicating the letter L.

International Morse Code sequence representing the letter L.

A Local Notice to Mariners (LNM) is a publication issued by maritime authorities to provide important information to mariners about navigational hazards, changes to aids to navigation, and other relevant updates affecting a specific area or waterway. LNMs are typically issued regularly and are essential for ensuring the safety of maritime navigation in a particular...

Length Overall

A Local Notice to Mariners (LNM) is a publication issued by maritime authorities to provide important information to mariners about navigational hazards, changes to aids to navigation, and other relevant updates affecting a specific area or waterway. LNMs are typically issued regularly and are essential for ensuring the safety of maritime navigation in a particular...