How does GPS work?

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.

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.

Risk Involved When Unmooring Operation on Deck

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.

Theory on Wind drift will be shown together with demos using SAMMON planning on the effect of thrusters to have some effect on drift speed & direction

Port Revel is used for shiphandling training of maritime pilots, masters and officers on a 5 ha lake with 11 manned model ships representing 20 vessels, and 4 tugs at scale 1:25 and DGPS tracking system. Instructors are former maritime pilots.
Training on the scale models provides experience that could never be gained on real ships for the simple reason that neither ship-owners nor local authorities would allow such risks to be taken. Scale models allow the shiphandler to make mistakes....

In our new new section “Five questions for ..." Marine-Pilots.com introduces pilots and other market players to our readers in short interviews.

Today we have talked to Porthos Lima, Rio de Janeiro Pilots Operations Director.

On March 15, 2021, about 1302 local time, the oil tanker Riverside with a crew of 21 and 2 pilots was transiting outbound from the port of Corpus Christi, near Ingleside, Texas, in a loaded condition when the vessel lost propulsion and struck the no. 4 loading dock at the Moda Ingleside Energy Center. 1 No pollution or injuries were reported. Damage to the vessel was estimated at $550,000. The estimated property damage to the facility was $7 million.