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.

Educational and descriptive video

Practical samples for manoeuvres for ships going astern - as Stern-First-Method SFM. Introduction using as sample from the Master Thesis by Karel Wiegert for an arrival manoeuvre of a cruise vessel in Southampton port with a Twin-screw vessel under strong current. The same manoeuvre with the same ship model was used to show the advantage of Fast Time Simulation FTS using the SAMMON Planning Tool. This goes much faster than the manoeuvres in the real time simulator - and it can even be...

Full title: "The Digital Transformation of Canadian Hydrographic Offices, and the Corresponding Contributions to Seabed 2030 and Lakebed 2030"
Presented at the Lakebed 2030 Conference in 2021
Get involved at Lakebed2030.org

Ships have reported an increasing number of cases of significant GPS interference and jamming in recent months. The geographic areas with more than one reported incident include the eastern and central Mediterranean Sea, the Persian Gulf, and multiple Chinese ports.

Pilot recruitment has traditionally been based on seniority, and extensive sea experience. However, a more modern approach, hiring younger, motivated candidates with structured training, offers an alternative path with compelling advantages.

transfer of Marine Ship's Pilots by helicopter hoist is a demanding task.
Berthing means bringing a vessel to her berth until the ship is made fast. ... The berthing and unberthing manoeuvres require great knowledge and skill by the master, officers and the crew, as well as an excellent team-work with the rope-runners and the mooring party ashore