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How GPS works? Trilateration explained


published on 4 July 2019 184 -

How GPS works? Trilateration explained
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Article GPS (Part 1) - Structure, mode of operation, technical and physical fundamentals of GPS

by Capt. Gunter Schütze, Thailand/Germany - published on 30 January 2020

Of course, as a Nautical Specialist, I also deal with the international discussion on the advantages and disadvantages of satellite-based navigation, e-navigation and conventional terrestrial and astronomical navigation.

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Article GPS (Part 2), physical and technical errors of GNSS - an error analysis

by Capt. Gunter Schütze, Thailand/Germany - published on 26 February 2020

In my announced sequel, the second part of GPS, it is primarily about the technical and physical operational and functional limitations to which GPS is subject. These limitations, in part, have serious implications for the accuracy of GPS, and even go as far as limiting the functionality of GPS in its functions or even making it impossible. In doing so,

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Article GPS (Part 3) - Accidental interferences and intended Interferences by extern technical sytems

by Capt. Gunter Schütze, Thailand/Germany - published on 6 May 2020

The vulnerability of GNSS in shore-based use is definitely different and to be regarded as much more risky than on the high seas.

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Article Maritime Pilotage and Sustainable Seaport: A Systematic Review

by Seyed Behbood Issa-Zadeh & Claudia Lizette Garay-Rondero - published on 14 August 2025

Article by Seyed Behbood Issa-Zadeh & Claudia Lizette Garay-Rondero

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Article Safety Training Course for Maritime Pilots and Pilot Boat Crews (Germany)

by Bundeslotsenkammer - published on 12 June 2026

Since 2019, the German Federal Pilotage Chamber (Bundeslotsenkammer, BLK), in cooperation with Hamburg Port Services GmbH (HPS), has been offering a three-day safety training course specifically designed for maritime pilots and pilot boat crews at a training center in Bremerhaven, Germany.

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Article 1,000 Combinations around - Which one is correct?

by Arie Palmers, Netherlands - published on 22 October 2020

Before you, you see my third article on pilot boarding arrangements. After my two previous articles ‘1000 ways to secure a pilot ladder’ and ‘1000 ladders around’, I have received a lot of feedback and also questions to get deeper into the matter of combinations and embarkation platforms.

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Article Wärtsilä simulator upgrade will enhance Le Havre pilot operations

by Marine-Pilots.com - published on 25 May 2020

The technology group Wärtsilä will supply a complete navigational simulator upgrade for the Le Havre pilot station in France. The intention is to provide the pilot station with a totally new simulator specifically adapted to the requirements of the pilots’ operations. The order with Wärtsilä was placed in February 2020.The new unique visualisation system to be supplied is based on 14 DP projectors, comprising seven main circular and seven ground projection systems. It features a panoramic 350-degree screen.

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Video Harbor Pilots SRL Career Day

published on 31 January 2021

Captain Bronson Stubbs discusses what harbor pilots do

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Video 2022 Nederland Vlissingen Loodsboten Pioneer

published on 22 July 2022

Het Nederlands Loodswezen BV is een organisatie die de aangesloten registerloodsen de middelen verschaft om hun werk uit te oefenen. Zo int het Loodswezen de loodsgelden en zorgt de organisatie voor het transport van en naar zeeschepen. We zien hier een prachtig staaltje inparkeren door de Pioneer in de speciaal daarvoor aangelegde loodsbotenhaven in Vlissingen; naast het Keizersbolwerk. Klaar om de Westerschelde weer op te varen.

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Video “Harbor Pilot” 1960s Los Angeles Harbor Freighters & Ships Education Film

published on 25 June 2020

Harbor Pilot is a short film from 1967 that gives viewers a brief look at what a harbor pilot is and does. The film opens with footage of a sailboat sailing at sea, followed by a shot of a rocky coastline (01:10) and then an aerial view of a modern harbor — the Port of Los Angeles. A large freight ship, SS Gemstone, is out at sea. A harbor pilot stands on land at the Port of Los Angeles, looking out over the harbor. He walks into the pilot station at the entrance to the harbor to check the...

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