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 explores the question of why ships are so difficult to manoeuvre in reverse.

How AIS Works - Operation of AIS

Two new locks were introduced in 2009 for training in the new Panama lock conditions with or without tug(s). This video shows the famous "piston effect" when entering the lock at an impressive speed of 10 knots with a high blockage factor.
Port Revel provides shiphandling training using manned models for maritime pilots, masters and officers: http://www.portrevel.com

In the spring of 2023, the IMO Sub-commission on Navigation, Communications and Search and Rescue (NCSR) may start a process of review and amendments to the SOLAS Ch V. reg 23

Footage showing what the simulators look like and how they can be used to simulate ship movement in various ports.

Editors note:
Pilot Boat "Döse" built by A&R