NadirThe part of the celestial sphere located directly opposite the zenith
Nautical mileThe length of one minute of arc of a great circle on the surface of the earth equal to 1820 metres
NautophoneAn electrically operated horn for giving fog warnings
Navigation lightsLights for night navitation
NavigatorA crewman trained and qualified in the practice of determining position and setting courses
Navionics.Digital cartography builder.
NEMEAStandard communication device for marine electronic devices
NimbusDark cloud without a specific shape
Nipper, gasketReinforcement which shelters mooring cables. Oakum which wraps the propeller axis inside the stern tube: if wet with water, it increases its volume and makes the environment watertighe
NMEA 0183Standard of GPS data communication
NMEA 2000It contains the requirements of a communication network to connect marine electronic devices on ships
North-east windWind coming from North-East
November.Term which represents ‚N‚ in the international phonetic alphabet.
Numerical flagTrapezoidal flag used to indicate signals, such as numbers or answering pennant