Marine Link
Wednesday, December 12, 2018

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

Image: Cheng Lie Navigation

APL, Cheng Lie Navigation to Merge Intra-Asia Service

The container transportation and shipping company American President Lines Ltd (APL)…

Goldilocks Fund acquires 18.32% of UAE's Gulf Navigation

Goldilocks Investment Company, an Abu Dhabi-based fund managed by ADCM Altus Investment Management…

From left: Dimitra Kosta, Customer Support Director SRH Marine Electronics, Erik van der Noordaa, John Laderos and Wim Nieuwveld (Global Contract Manager Radio Holland). (Photo: Radion Holland)

Radio Holland, SRH Launch Partnership

After a longstanding relationship SRH Marine Group and Radio Holland Group signed…

Coast Guard Commandant Adm. Karl Schultz visits with Coast Guard crews stationed in
New York City. U.S. Coast Guard photo illustration by Petty Officer 1st Class Jetta Disco.

Interview: Admiral Karl Schultz, Commandant, United States Coast Guard

Maritime Reporter & Engineering News was offered the opportunity to interview Admiral Karl Schultz…

Pic: Finnish Transport Agency

Finnish Transport Agency Issues Winter Navigation Guidelines

The Finnish Transport Agency (FTA), which will become the Finnish Transport Infrastructure…

Falco (Photo courtesy of Rolls-Royce)

Rolls-Royce, Finferries Demonstrate First Fully Autonomous Ferry

Rolls-Royce and Finnish state-owned ferry operator Finferries have successfully demonstrated…

Photo; Moose Boats

New Moose Boat For SFFD

Moose Boats delivered a M2-38 Catamaran CBRN, Dive and Fire Rescue vessel to San…

Image: © niyazz - fotolia.com / europa.eu

Enhancing Safe Ship Operations in Arctic

The European Union (EU)-funded 'Safe maritime operations under extreme conditions…

The Coast Guard and three good Samaritan vessels assisted in the rescue of 15 people from a lift boat near Grand Isle, La., November 18, 2018. (U.S. Coast Guard photo by Alexandria Preston)

Liftboat Taking on Water in US Gulf

Fifteen people have been rescued from a liftboat that lost power and is listing and…

Photo courtesy of ONE

ONE Delivers 14,000-TEU Containership

Ocean Network Express Pte. Ltd. (“ONE”) is has announced that ONE Columbia, with…

Image: Hyundai Heavy Industries

Hyundai Heavy Industries Gets Cyber Security-Ready Notation from ABS

Classification society ABS and Hyundai Heavy Industries (HHI) collaborated to develop…

Photo: Langh Tech

Langh Tech Delivers Scrubbers for the Greek Market

Langh Tech has secured a large deal in Greece for the delivery of 10 shipset scrubber…

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Maritime Reporter Magazine Cover Nov 2018 - Workboat Edition

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