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TermDefinition
- Motor cone A sailing vessel making way using sails and engine. A downward pointing cone should be displayed in the fore triangle in daylight and lights(...) Read more
- National Oceanic and Atmospheric Administration The National Oceanic and Atmospheric Administration is an American scientific agency within the United States Department of Commerce that(...) Read more
- NOAA The National Oceanic and Atmospheric Administration is an American scientific agency within the United States Department of Commerce that(...) Read more
- Nautical Almanac An annual publication containing information on Ports, Tide tables and much, much more. Read more
- Navigation Lights Lights exhibited by all vessels between sunset and sunrise, in restricted visibility and may be exhibited in any other circumstances if deemed(...) Read more
- NavtexA compact system which can be installed on your vessel to receive 518 kHz and 490 kHz broadcasts of weather information. Read more
- Neap RangeThe difference in height between HW and LW on a Mean (average) neap tide. Read more
- Neap TideTides where the range is least and the tidal streams run least strongly Read more
- Weather (Meteorology) Near Gale Sometimes used to describe wind strength approaching a Gale. Read more
- Not Under CommandVessel broken down. No steerage, engines defunct etc. Read more
- Phonetic Alphabet November Phonetic alphabet letter N. Negative Response: When a vessel displays the November flag, it indicates a negative response to a question or a(...) Read more
- Occulting LightA rhythmic light in which the duration of light in each period is longer than the total duration of darkness Read more
- Ocean Data Acquisition System The Ocean Data Acquisition System (ODAS) is a system used to collect, process, and transmit various types of oceanographic data. This system(...) Read more
- ODAS The Ocean Data Acquisition System (ODAS) is a system used to collect, process, and transmit various types of oceanographic data. This system(...) Read more
- OffshoreWind blowing away from the land or “being at sea” Read more
- OilskinsWaterproof clothing worn in foul weather Read more
- On the Port BowAhead of a vessel at an angle to the bows, but forward of the beam, to the left Read more
- On the Port QuarterAt an angle to the stern of your vessel, but abaft the beam, to the left Read more
- On the Starboard BowAhead of a vessel at an angle to the bows, but forward of the beam, to the right Read more
- On the Starboard QuarterAt an angle to the stern of your vessel, but abaft the beam, to the right Read more