How GPS works? Trilateration explained

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.

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,

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

With ships as large as 175 feet wide and a channel a maximum of 500 feet wide, how to you safely pass? Former Houston ship channel pilot, Lou Vest, explains how ships fight against hydrodynamics to pass with such narrow margins.
https://houstonmaritime.org

Maritime pilots trace the roots of their profession back to the ancient Greeks and Romans when incoming ship captains employed experienced local fisherman to guide their merchant vessels safely into port. It’s a legacy of skill, strength, and sharp wits, and our Houston Pilots (“Pilots”) have been meeting vessels at Galveston’s bar to carry on these proud traditions for just shy of 100 years.

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

Tips by Captain Kris.
kris@mes.de
krisdedecker

This publication (2024) details the rules, regulations and procedures that should be followed when preparing for pilot embarkation and disembarkation. It includes relevant excerpts from SOLAS regulations and IMO resolutions.

ABP Southampton: NOTICE IS HEREBY GIVEN that some ships have a pilot transfer arrangement consisting of an accommodation ladder / pilot ladder combination with a trapdoor that does not meet IMO standards in effect since at least 2012.