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.

Ships don't exactly have brakes. Lou Vest, a retired Houston ship channel pilot tells us about a close encounter between a ship and a barge.
https://houstonmaritime.org

Another good explaining video from Knud Benedict, ISSIMS

Case Study: An investigation into whether Port of Melbourne and major port user, ExxonMobil, could bring deeper drafted vessels into the channel.

The role of a Tug Master undertaking harbour towage activities is a very specific one. He/she has to, alone or in cooperation with other Tug Masters, assist a ship in a safe and efficient way using his/her tug to the best of its qualities. 

Training video II on the correct behaviour in case of man overboard

PSA Marine (Pte) Ltd (“PSA Marine”) joins the global movement towards sustainable shipping by reducing carbon footprint with the use of a digital solution – Vessel Pilot Communication (“VPC”), launched on 25 August 2020. With VPC, PSA Marine ensures that critical and timely updates on pilot boarding times and traffic conditions in and around the pilot boarding grounds are communicated to vessel masters.

In April, 25 percent fewer ships on the German Kiel Canal (NOK) - and things could get even worse. It seems that the exemplary situation at the NOK certainly affects many other channels in the world in a similar way.