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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 CHIRP Pilot Ladders (Landscape)

published on 13 December 2023

We take a look at some of the dangerous ladder arrangements provided by ships when attempting to take maritime pilots on board. Our message is simple: if you are offered an unsafe or non-compliant ladder, do not board!

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Article Navigation alternative in the event of GNSS failure due to jamming or spoofing

by TRENZ GmbH - published on 7 April 2025

What happens when GNSS fails? In maritime navigation, this isn’t a hypothetical scenario – it’s a growing risk. Spoofing, jamming, and GNSS outages are increasing, especially in the Baltic Sea region. A failure can cripple navigation systems – with potentially serious consequences.

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Video Safety training course for German maritime pilots I

published on 12 June 2026

‘It certainly hurts – using the integrated lifting sling on a life jacket.’

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Video Loud & Clear COMM while berthing vessels

by Nasir Khan - published on 25 April 2022

A video by Capt. Pilot Nasir Khan, Pakistan
Why loud and clear communication is very important.

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Article Study: Online survey among maritime pilots: job-related stress...

published on 2 September 2021

Online survey among maritime pilots in Germany: job-related stress and strain and the effects on their work ability.

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Video How Cargo Ships Navigate the World's Most Treacherous Bay

published on 10 December 2025

Play World of Warships for Free! Click my link to join the battle and unlock exclusive rewards. https://wo.ws/SamEckholm For over 150 years, the San Francisco Bar Pilots have guided the world’s largest ships through one of the most dangerous stretches of water anywhere on Earth. In this episode, I'm taking you out to sea with the pilots to see what it actually takes to navigate these vessels through the Golden Gate. Follow Along Here: --------------------------------------------- 📸...

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Video Port of Hay Point - Marine Pilotage

published on 26 September 2020

NQBP is proudly committed to safe shipping - watch as our Marine Pilot, Captain Luke Sorensen explains how he safely manoeuvres a vessel from the PortofHayPoint.
Fact: In 2015-16, 1133 vessels were handled at this NQBP port.

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