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.

Nautical Institute webinar, 13:00 – 14:30 UTC on Thursday 31st March, 2022.

A look into the future of the ship's bridge with new technologies.

Ships have reported an increasing number of cases of significant GPS interference and jamming in recent months. The geographic areas with more than one reported incident include the eastern and central Mediterranean Sea, the Persian Gulf, and multiple Chinese ports.

Another great education video by Knud Benedict (Germany): Practical experiments for getting useful data for planning.

Just caught pilot launch Griffiths finishing a MOB drill and goes home to Queenscliff.
For a tour over Griffiths see this video https://youtu.be/rAnG87kd9Uw
Ship spotting at Point Lonsdale and other water activities by Wally on Water.