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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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Video Maritime Training: Man Overboard! Training Video

published on 4 July 2020

Visit https://www.maritimetraining.com to purchase the full-length version. Produced by Maritime Training Services.

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Article Pilot Ladder Handbook by PTR Holland (latest version)

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The latest summary from PTR Holland on the subject of pilot ladders. Here is the most important information on maintenance, use and replacement & insepection record book.

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Article Pilot dispatching problem along a maritime corridor: a case study in the St. Lawrence River

published on 13 May 2025

This study presents a novel decision support process for a pilot dispatching problem in the St. Lawrence River. It integrates a comprehensive set of time-based performance measures, including working time, waiting time, and skill level differences, to optimize fairness and operational efficiency in pilot dispatching.

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Video IMPA Seminar on Maritime Pilots and Pilotage

published on 10 November 2022

The Seminar aims to inform Member States, intergovernmental organizations and non-governmental organizations in consultative status with IMO about the societal value of maritime pilots and pilotage as a public service. The IMO Secretary-General has recognised maritime pilots as having always been vital to ensuring the safety of navigation in key ports and shipping lanes globally and playing a crucial role in sustaining the global supply chain using specialized knowledge and expertise....

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Article How many Navy vessels are compliant to SOLAS ch.V reg23?

by Arie Palmers - published on 25 April 2022

A 1,000 Navy Vessels around... Quite often those vessels have the tendency of presenting themselves with a pilot transfer arrangement which is non-compliant.

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Article UK Ports and Pilots take firm stand against Non-compliant Trap Door Boarding arrangements

published on 24 March 2021

UKMPA has released a notice to their members today regarding the so-called non compliant trapdoors. Vessels have been rejected entrance, talks have started with different shipping companies.

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Opinion Maritime Pilotage - Yesterday, Today and Tomorrow

by André Gaillard - published on 17 February 2021

In this article Marine Pilot André Gaillard gives us his vision of the maritime pilotage profession of yesterday, today and tomorrow.

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