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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 The Physics of Golden Ray Capsize - Part 2 Mechanism and Solution

published on 5 June 2021

This video provides the detailed explanation of the phenomenon showed in Part 1 of this topic and a solution for this problem at the end. This phenomenon was recently disocovered by Dr. Steve Shaojie Tang and published in his book by Faiteve inc in 2018. The book info can be found at Faiteve inc https://www.faiteve.com/ The testimony of the captain on duty in the public hearing of Golden Ray capsizing at https://livestream.com/uscginvestigations/events/9252896/videos/211109207 in the time...

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Video A Global Perspective | Maritime SheEO Conference 2021

published on 22 December 2021

What has the current experiences and developments in Maritime Pilotage Training been like? This session takes a global perspective at the conference. At the panel are: 🌊 John Barker, Senior Marine Pilot, Port of Auckland (New Zealand) 🌊 Captain Hanna Odengrund, Marine Pilot, Sweden Maritime Administration 🌊 Nurul Arrienne, Marine Pilot, Port of Tanjung, Malaysia 🌊 Fatouma Ali Ahmed, First Female Marine Pilot, Port of Djibouti 🌊 Reshma Nilofer, First Female Marine Pilot (India) 🌊...

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Article New book: The Situational Awareness & The Port Pilotage Services

published on 8 February 2021

Serkan Kahraman and Yusuf Zorba have published a new book for marine pilots. In this book, maritime pilots and shipmasters’ situational awareness levels have been analyzed using a bridge simulator system and the results have been obtained.

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Video S-100 in confined waters: an official IHO testbed and sea trial

published on 27 April 2026

What happens when next-generation maritime data is put to the test in some of the most complex navigational environments? This video shares insights from a major international S-100 simulator trial, delivered in collaboration with Carnival Corporation’s CSMART training facility and a wide network of global partners. Together, we explored how S-100 data sets perform in realistic, high-pressure bridge scenarios—particularly in confined waters where precision and timing are critical. Bringing...

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Article Enhancing Pilot Ladder Safety: The Role of New SOLAS Regulations

by Herman Broers - published on 8 January 2025

The International Maritime Organization’s (IMO) upcoming amendments to SOLAS Chapter V, Regulation 23, represent a significant step forward in enhancing the safety of pilot ladder operations.

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Video Unberthing of a 23,000 gross tons tanker

published on 22 June 2020

The "Navig8 Axinite" is a 184 meter tanker. It is in loaded conditions. two tugs are used. The maneuver consists of backing out using 2 tugs and the ship´s engine, for about 2 and a half ship´s lenghts an then turning to port. After the turn, you can hear me talking with the captain about passing arrangements with an inbound vessel, (another tanker).

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