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Retrieved from "https://en.wikipedia.org/w/index.php?title=Lead_line_(nautical)&oldid=1032658570"
Marine chronometer used to determine time at the prime meridian with great precision which is necessary when reducing sights in celestial navigation. Nocturnal used to determine apparent local time by viewing the Polaris and its surrounding stars. Ring dial or astronomical ring used to measure the height of a celestial body above the horizon ...
In July 2009 the Naval Sea Systems Command (NAVSEA) announced that Swiftships Shipbuilders would provide the Iraqi Navy with a patrol boat fleet of up to 15 Coastal Patrol Boats (CPBs). In Sept 2009 Swiftships Shipbuilders received a $181 million contract for the detail design and construction of 9 patrol boats plus spare parts, and technical ...
The top manufacturer is Garmin's Marine division with a turnover of US$917 Million in 2023 [8] followed by Brunswick-owned Navico Group (Simrad, Lowrance, B&G and several other brands), with a turnover of US$915 Million (although this includes sales of equipment which is not marine electronics, such as batteries, cables and pumps).
Alpha, the Russian counterpart of the Omega Navigation System, still partially in use as of November 2017. Decca Navigator Decca had earlier proposed a system known as Delrac that Omega was subsequently based on. [1] LORAN, low frequency terrestrial radio navigation system, still in use (US and Canadian operations terminated 2010).
A pelorus is useful, for instance, in determining the moment at which an aid to navigation is broad on the beam. It is also useful in measuring pairs of relative bearings which can be used to determine distance off and distance abeam of a navigational aid. If the true heading is set at the lubber's line, true bearings are observed directly.
Navman F20. Established by Sir Peter Maire in 1986 as New Zealand-based Talon Technology, Navman (as the company became known in the 1990s) is a GPS systems company providing stand-alone GPS units, OEM GPS modules, GPS software for Palm handhelds and Pocket PCs, automotive navigation systems and navigation systems for use at sea.
Navigational aids (also known as aids to navigation) include all forms of signal, marks and guidance equipment used to facilitate navigation. The term is most commonly used in the context of marine and fluvial navigation, but it can be used to refer to navigation assistance system for aerial navigation.
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