Nautical Charter

Nautical Dictionary - Nautical Glossary - Maritime Terminology

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Nautical Dictionary

Nautical Glossary - Maritime Terminology


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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Narrows
Small passages
National Flag
The flag carried by a ship to show her nationality.
Natural Gas
Short for compressed natural gas or CNG. A type of compressed gas used as fuel for stoves and heaters. CNG is stored in metal cylinders prior to use. CNG is considered safer than other types of fuel such as propane LPG because it is lighter than air and may rise into the sky in the event of a leak. Caution should still be used as CNG can collect near the cabin ceiling, potentially causing an explosion.
Nautical
Having to do with boats, ships, or sailing.
Nautical Almanac
An annual publication that contains tidal information and information about the position of the sun, moon, planets and stars. This information is used for celestial navigation.
Nautical Mile
Distance at sea is measured in nautical miles, which are about 6076 feet, 1.15 statute miles or 1852 meters. Nautical miles have the unique property that a minute of latitude is equal to one nautical mile. Measurement of speed is done in knots where one knot equals one nautical mile per hour.
Naval Architect
One who designs ships.
Naval Architecture
The art and science of designing vessels.
Navigable Water
Water of sufficient depth to allow a boat to travel through it.
Navigation
The art and science of determining the position of a boat and the course needed to safely and efficiently move the boat from place to place.
Navigation Bridge
The bridge used for taking observations, or directing the handling of the ship.
Navigation Lights
Required lights on a boat help others determine its course, position and what it is doing. Boats underway should have a red light visible from its port bow, a green light on the starboard bow and a white light at its stern. Other lights are required for vessels under power, fishing, towing, etc.
Navigation Rules
The maritime regulations governing the movement of vessels in relation to each other, generally called steering and sailing rules.
Navigator
The officer on board responsible for the navigation of the ship.
Neap Tide
The tide with the least variation in water level, occurring when the moon is one quarter and three quarters full. The lowest high tide and the highest low tide occur at neap tide. The opposite is the spring tide.
Neptune
The Roman god of the sea, associated with Salacia, the goddess of Salt Water.
Neptune's Sheep
Nickname for waves breaking into foam.
Net Tonnage
Useful cargo carrying capacity of vessel. The volume of cargo a ship could carry, equal to gross tonnage minus the crew cabins, storerooms and machinery spaces. One ton equals 100 cubic feet.
Nip
(1) A short turn or twist in a line. (2) The seized part of an eye splice.
Nipped
Said of a vessel when caught between ice on both sides.
Nipper
A short length of line, usually braided or marled, used to temporarily bind the anchor cable to the messenger when the anchor is weighed by hand around the capstan.
No Go Zone
Area into which a boat can not go without tacking.
No Man's Land
On a square-rigged ship, the area between the after end of the forecastle and the forward end of the booms where lines, blocks, and tackle were stored.
No Room To Swing a Cat
Describing a small or confined space. Originated from the time when a cat-o'-nine-tails was used to inflict punishment.
NOAA
National Oceanographic and Atmospheric Administration (U.S.), produces nautical charts and weather forecasts
Noon Sight
A sighting taken for celestial navigation at noon, when the sun is at its highest point in the sky.
Noon Watch
The watch or work shift beginning at noon, usually lasting until 4pm or the evening meal.
1 nor'easter
a wind coming from the northeast
Norman
A pin placed through the head of a rudder to prevent it from being lost.
North
One of the 4 cardinal compass points. North is the direction toward the North Pole and is at 0° or 360° on a compass card.
North Pole
The top point of the line about which the earth rotates.
North Star
Polaris, the North Star, is visible in the northern hemisphere and indicates the direction of north. In the southern hemisphere the Southern Cross is used to find the direction of south.
North Wind, Northerly Wind
Wind coming from the north.
Notices to Mariners
Periodic publications containing details of any alterations to charts, to keep them up to date.
Nun
A kind of navigational buoy
Nunatak
Isolated rocky peak rising from a sheet of inland ice.

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