Navigation

Navigation, derived from the Latin words "navis" (meaning  "ship") and "agere" (meaning "to drive") is the process of accurately determining the position and controlling the movement of a craft or vehicle along a desired course. This is accomplished by finding the navigator's position compared to known locations or patterns.

Early instruments used for determining latitude were the quadrant, (which measured the altitude of the polestar or the noonday sun,) the astrolabe and the sextant. Longitude was originally fixed using chronometers and tables showing yearly positions of celestial bodies. The first mariners to explore the world’s oceans developed standard ways of observing and recording their location, the routes they traveled, wind and water currents, and other useful facts. These records, logs, and journals made it possible find their way home and pass along their observations. Each successful voyage became a part of an expanding collection of reliable maritime information.

Modern navigation systems are part of a tightly coordinated and widely integrated transportation system in which each vessel must be responsible for staying on course, avoiding collisions, minimizing fuel consumption, and keeping on schedule. Modern navigation systems make use of many traditional tools, such as compasses, charts, instruments; but over the past century radio beacons, satellite networks and global positioning systems have been relied upon with increasing frequency to determine a ship’s position.

Ship compasses are usually stabilized by gyroscopes and installed in housing which properly compensates for the vessel’s motion. Charts are another essential navigational tool- position is fixed using charts of known locations in concert with instruments that calculate a vessel’s relative bearing. Dead reckoning is a method which relies on recording the accurate velocity calculated by gyroscopes and computer analysis of the vessel’s acceleration.

Tags: Navigation

Photo: Moose Boats

Moose Boats Awarded New Vessel Contract

Moose Boats, a boat designer and manufacturer in the San Francisco Bay Area, was…

Image Credit: Danelec

VDRs for Inland Vessels: Does It Make Sense?

It just might. And, you’ve got options.The Voyage Data Recorder (VDR) carriage requirements…

Photo: Kongsberg

Kongsberg Fishery Simulator for Greenland

Nine commercial fishery companies have donated in total $471,587 to Danish training institute…

Photo: Wärtsilä

Wes Amelie Retrofit for Synthetic Natural Gas

The technology group Wärtsilä, in collaboration with PSA Marine, has achieved a breakthrough…

Pic: U.S. Naval Forces Central Command

Global Coalition Launches Operation Sentinel

The US Central Command announced the opening of operations from its Bahrain headquarters…

The 203-foot Panamanian-flagged cargo vessel, Betty K VI, is hard aground north of Fishers Island, Florida Thursday, Nov. 7, 2019. The cargo vessel ran aground after losing propulsion during its transit through Government Cut. (U.S. Coast Guard photo courtesy of Sector Miami)

Cargo Ship Runs Aground in Florida

A 203-foot cargo vessel has run hard aground north of Fishers Island, Fla. on Thursday…

Nicholas Bourque, President of Marine Press (left) and Martin Taylor, Chief Executive Officer of ChartCo (right) (Photo: ChartCo)

ChartCo, Marine Press Merge into 'OneOcean'

ChartCo and Marine Press, both leaders in global digital navigation solutions, have…

Photo: Damen

Damen’s Delivers Customized CSD to Brazil

Damen has just shipped a fully customized Cutter Suction Dredger (CSD) 350, to Brazil.

Pic: Waterborne Technology Platform

Europe Establishes Waterborne TP

The European Commission and Member States will establish a co-programed partnership…

Pic: International Maritime Organization (IMO)

IMO Focus on SatCom

Terrestrial and satellite radio-communications are essential for routine communications…

Photo courtesy of VIKING Life-Saving Equipment

VIKING Wins Greek Coast Guard Tender

VIKING Life-Saving Equipment has been declared the winning bidder in a tender covering…

Alternate fuels such as liquid hydrogen are already well-served by existing supply chains. Credit: Glosten

Ship Design: Evolving for Efficiency, Compliance

The evolution of marine design is increasingly influenced by three drivers: New three…

Related Articles

Shipbuilding / Vessel Construction

Shipbuilding is the construction of ships, which takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, are workers which specialize in vessel construction and repair. The construction of boats is called boat building.

Pod Propulsion

Pods are devices which combine both propulsive and steering functions in one device. They are usually located below the stern of a ship, making use of the following internal components: a fix pitch propeller, shaft, thrust and support bearings…

Sonar

Sonar is a technique that uses sound to navigate, communicate with or detect other vessels, and to observe the distance and velocity of underwater objects. The acoustic frequencies used vary from extremely low (infrasonic) to very high (ultrasonic).

Ship Electronics

Electronic devices classed for use in the marine environment. All electronics used onboard must be designed to fit in the small confines of a bridge and can come in contact with salt water, so they are made to be very water resistant or waterproof.

Navigation

Navigation, derived from the Latin words "navis" (meaning  "ship") and "agere" (meaning "to drive") is the process of accurately determining the position and controlling the movement of a craft or vehicle along a desired course. This is accomplished…
Maritime Reporter Magazine Cover Nov 2019 - Workboat Edition

Maritime Reporter and Engineering News’ first edition was published in New York City in 1883 and became our flagship publication in 1939. It is the world’s largest audited circulation magazine serving the global maritime industry, delivering more insightful editorial and news to more industry decision makers than any other source.

Subscribe
Maritime Reporter E-News subscription

Maritime Reporter E-News is the maritime industry's largest circulation and most authoritative ENews Service, delivered to your Email three times per week

Subscribe for Maritime Reporter E-News