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Hella GmbH & Co. KGaA is an internationally operating German automotive parts supplier headquartered in Lippstadt, North Rhine-Westphalia. The company develops and manufactures lighting, electronic components , and systems for the automotive industry .
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).
NMEA 0183 is a combined electrical and data specification for communication between marine electronics such as echo sounder, sonars, anemometer, gyrocompass, autopilot, GPS receivers and many other types of instruments. It has been defined and is controlled by the National Marine Electronics Association (NMEA).
List of Lights issued by the US Coast Guard. List of lights and radio signals, sometimes including Fog Signals are provided by government authorities and hydrographic offices for mariners. The lists include prominent lights, such as lighthouses and radio stations that are used in passage planning for navigation and communication while on voyage.
On nautical charts, the top of the chart is always true north, rather than magnetic north, towards which a compass points. Most charts include a compass rose depicting the variation between magnetic and true north. However, the use of the Mercator projection has drawbacks. This projection shows the lines of longitude as parallel.
A Raymarine chartplotter. A chartplotter is a device used in marine navigation that integrates GPS data with an electronic navigational chart (ENC).. The chartplotter displays the ENC along with the position, heading and speed of the ship, and may display additional information from radar, automatic information systems (AIS) or other sensors.
The term chronometer is also used to describe a marine chronometer used for celestial navigation and determination of longitude. The marine chronometer was invented by John Harrison in 1730. This was the first of a series of chronometers that enabled accurate marine navigation. From then on, an accurate chronometer was essential to open-ocean ...
The Chelsea Clock Company is an American clock manufacturing company founded in 1897. Clocks produced by Chelsea Clock Company have been found in the White House, on US Naval Ships, and in homes and offices around the world. The company continues to build and repair clocks at their corporate headquarters in Chelsea, Massachusetts.