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.

There are many things in both our everyday and professional lives which we take for granted and never question the origins of, an example of this might be the IMPA recommended ‘pilot mark or pilot line’, which is sometimes seen on the side of vessels indicating where a vessels freeboard exceeds 9 metres.

SWATH@A&R – AN IDEA ON THE RISE
Visit company profile: Abeking & Rasmussen
For thousands of years ships have been firmly anchored in human identity. They have benefited and advanced the human kind in countless ways. And yet all along this amazing journey seafarers have been plagued by seasickness, an incessant and relentless nausea caused by the ship’s rolling and rocking. Many experts have tried to find the remedy for the persistent ailment, but always with moderate success.
That is,...

An article by Arie Palmers highlights his collaboration with Multraship to develop a solution aimed at enhancing the safety of pilot boarding on harbor tugs, ultimately reducing delays.

"A performance assessment tool for maritime pilotage operations" - by Jørgen Ernstsen, Norway
When the ship is approaching or leaving a port, a local navigational expert, the pilot, is often provided for assisting the bridge team to safely and efficiently navigate the littoral waters.

The Bollard Pull value, which can be interpreted as the maximum thrust that is developed for a specific amount of time by the propulsion systems of any vessel to the fullest , when it has zero speed in the forward direction, is the criterion that allows us to understand how suitable a tugboat is for a port maneuver or a towing operation.

Sanmar Shipyards has signed six vessel contracts together totalling US$33.46 million with the Port Qasim Authority (PQA) in Pakistan for four high-performance state-of-the-art tugboats and two pilot boats. The tugs are scheduled to be delivered in 12 months and the pilot boats in 10.

July 2020, short clip of Foyle Leader - Foyle Port's pilot vessel and crew in action, heading back to Greencastle after dropping a pilot off on an inbound cargo ship www.nightskyhunter.com