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.

This video has already been published for the first time in 2020. Please also note the second, more recent video in the appendix. This physical ladder simulator was designed for crew training in the ladder arrangement and for all the users especially for pilots.

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

What is causing the forward motion of a stopped vessel using continous bow thruster action?
by Capt. H. Cauvier

At sea, space technology is used to help save lives every day: managing traffic between ships, picking up migrants and refugees in distress or spotting oil spills. The European Space Agency is once again at the forefront developing new technologies and satellites: to keep us safe at sea and to monitor the environment. Space makes a difference here on Earth and certainly at sea where there is no infrastructure.
Recommendation by Marine-Pilots.com
AIS services are offered by, for example:

This webinar is part of the Resilient Positioning Navigation and Timing Seminar Series.

Editors note: Great video with a brilliant technique: Move your phone while watching and see the different angles of the full 360 degree view. Amazing!
A big thank you to Kris de Decker.

There are approximately 160 Columbia River Pilots, which are organized into two associations. The Columbia River Pilots Association (CRPA) is made up of 80 pilots, while the Washington Pilots Association (WPA) consists of 80 pilots.