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.

Another good explaining video from Knud Benedict, ISSIMS

From that moment on I have been keeping a tally of the non compliant boarding arrangements I see in front of me on a daily base, and off course I participate in the annual safety campaign, conducted by IMPA each october.

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

The Master and pilot are dependant on each other for a safe and successful beginning or end of a voyage. They are both operating in a foreign environment.

When a vessel navigates in confined waters, such as in a harbour or narrow channel, it is well known among experienced pilots that the ship handling is greatly affected by the hydrodynamic forces and moments acting between ship and bank or sidewall of the channel.

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.

State regulators on Friday banned cargo ship pilots from using personal cellphones on Maryland waters. The Maryland Board of Pilots, which oversees cargo ship pilots, approved a rule change 10 months after, and in direct response to, the Ever Forward's weekslong grounding in the Chesapeake Bay. Instead of leading the team on the bridge of the Ever Forward, the pilot was on his phone for an hour, texting, sending emails and taking screenshots before running aground and getting stuck for 45...