Marine Link
Thursday, April 18, 2024


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

Source: Accelleron

Accelleron and BEMAC Partner on Digital Solutions for Engines and Turbochargers

Data gathering and transmission for Accelleron’s digital optimization solutions and…

Source: MariApps

MariApps and Intership Navigation Sign Digital Partnership

MariApps Marine Solutions has signed an agreement to enhance the digitalization of…

(Image: Bourbon)

Bourbon Orders Six Crewboats from Piriou

Bourbon Mobility on Tuesday announced it has ordered six new crewboats from shipbuilder…

© icholakov / Adobe Stock

Crumbling Great Lakes Ports Infrastructure Makes Port Insurance Even More Critical

The state of Great Lakes port infrastructure is one of the biggest issues facing the U.S.

Source: AMSA

Master and Shipping Company Prosecuted For Pilot Ladder Failure

The Australian Maritime Safety Authority (AMSA) has successfully prosecuted a ship's…

(Photo: U.S. Coast Guard)

St. Marys River Reopened After Laker Strikes Channel Light

The St. Marys River has reopened to vessel traffic after a U.S.-flagged Great Lakes…

(File photo: James Kimber / U.S. Coast Guard)

US Coast Guard Cutter Sea Dog Damaged

The U.S. Coast Guard Cutter Sea Dog (WPB 87373) sustained damage during the crew’s…

Tor Svanes, Founder and CEO, NAVTOR. Image courtesy Navto

Leadership Profile: Tor Svanes and NAVTOR's Quest to Transform Shipping

Compliance, performance, profitability, sustainability; take the biggest ‘pain points’…

Source: Avikus

Fuel Savings of Autonomous Navigation System Verified

Avikus, HD Hyundai's autonomous navigation in-house startup, has verified that its…

Source: Weathernews

Weathernews Launches "Berth Waiting Forecast" Service

Weathernews Inc. has launched its Berth Waiting Forecast which seamlessly integrates…

© Ravi / Adobe Stock

St. Lawrence Seaway Opens Navigation Season

The St. Lawrence Seaway opened its 66th season of operation today with an official…

The first tow of 2024 goes through Lock and Dam 2 in Hastings, Minn., on March 17. (Photo: U.S. Army Corps of Engineers)

First Tow Through Lock 2 Kicks Off Navigation Season on the Mississippi

The first towboat of 2024 passed through Lock and Dam 2, in Hastings, Minn. on Sunday…

Related Articles

Naval Architecture

Naval architecture is the field of engineering which deals with the design, construction and repair of ships, boats, and other marine vehicles. Ship and vessel design relies on many of the same technologies and engineering expertise found on shore…

Maritime Security

Maritime Security is a term which applies to a large variety of technology, devices, and operations both on deck and on shore. It can mean the simple measures used by boat owners and operators to protect individuals, vessels, and cargo from theft, sabotage, or piracy.


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).


A winch is a mechanism used to reel in, to let out, or otherwise adjust the tension of a rope, wire, or cable. Boats and ships make use of multiple winches to handle halyards, sheets, as well as anchor or mooring lines. The basic mechanism consists…

Maritime Standards

All nations require certain standards be met by ships and other marine structures which fly their flag. A classification society, or "Class", is a non-governmental regulatory association which regulates construction of vessels and offshore structures in the maritime industry.

Subscribe for
Maritime Reporter E-News

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