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These instruments are used primarily to measure the elevation or altitude of a celestial object: Back staff, the best known of which is the Davis' quadrant. It could measure the altitude of the Sun without having the navigator directly observe the Sun. Cross staff, an older instrument long out of use.
Navigation (from the Latin word navigatio) is the act of sailing or voyaging.Nautical (from Latin nautĭca, and this from Greek ναυτική [τέχνη] nautikḗ [téjne] "[art of] sailing" and from ναύτης nautes "sailor") is that pertaining to navigation and the science and art of sailing.
العربية; বাংলা; 閩南語 / Bân-lâm-gú; भोजपुरी; Български; Català; Čeština; Dansk; Davvisámegiella; Deutsch ...
All nautical instruments designed to measure the speed of a ship through water are known as logs. [1] This nomenclature dates back to days of sail when sailors tossed a log attached to rope knotted at regular intervals off the stern of a ship. The sailors would count the number of knots that passed through their hands in a given period of time.
1. That part of the ocean lying more than a few hundred nautical mile s from shore, and thus beyond the outer boundary of green water. 2. More generally, the open ocean or deep sea. blue-water navy 1. A navy capable of sustained operations in the open ocean, beyond a few hundred nautical miles from shore. 2.
All nautical instruments that measure the speed of a ship through water are known as logs. [2] This nomenclature dates back to the days of sail, when sailors attached a piece of lumber (a "log" of wood) to a rope knotted at regular intervals off the stern of a ship. Sailors counted the number of knots that passed through their hands in a given ...
A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation.It is used to determine longitude by comparing Greenwich Mean Time (GMT), and the time at the current location found from observations of celestial bodies.
Glossary of nautical terms may refer to: Glossary of nautical terms (A–L) Glossary of nautical terms (M–Z) This page was last edited on 21 December 2024 ...