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.

'Shallow Water Effects' - The New KARCO video which promises to bring immense training value for navigators, has been developed using very effective 3D Animation &VFX.

Tom Mellor - C​hairman of the IHO Electronic Navigational Chart Working Group (ENC WG) and Head of Digital Standards at the UKHO - explains what the IHO's ECDIS and ENC Standards mean.

Stanchions therefore are an often-overlooked part of a pilot transfer arrangement and therefore I
want to give them more attention in this article. They proved to be the cause of a whole series of accidents, some of which were even fatal.

This video complements the earlier demonstration of wind effect on straight track and shows now wind effect on turning circles. It can be seen that during a turn under strong wind the ship reduces turning when it comes close to equilibrium on straight track - if the Wind-to-ship speed ratio is big enough then the ship even goes straight instead of turning. This is shown for three samples for Head, Stern wind and Beam wind. The turning can be increased if the ratio of Wind speed-to-ship...

A 1,000 Navy Vessels around... Quite often those vessels have the tendency of presenting themselves with a pilot transfer arrangement which is non-compliant.

Shri Sanjay Bhatia former Chairman of Mumbai Port and Indian Port Association (IPA) expressed pleasure while releasing the All India Marine Pilots Association’s (AIMPA) maiden Issue of “Marine Pilot’s Journal” and applauded the efforts in taking out this kind of Journal to help highlight issues of pilots.

A Florida Harbor Pilot encountering the pilot pilot ladder of a submarine. First harbor pilots must make their way offshore through rough seas to a vessel desiring their expertise to safely enter port. Next harbor pilots must negotiate the dangerous boarding accommodations to embark on vessels of every type. Next, the real work begins by using years of experience and centuries of knowledge passed down through the rigorous training process, to safely guide vessels in and out of Florida's...