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.

SAMMON Lecturing Video describing
"Pivot Point Demonstration"
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SAMMON - the IDEAL tool to identify manoeuvring capabilities of a ship - SAMMON - learning the EFFECTIVE way

How to get information for wind & current limits to be potentially encountered by thrusters – or current? - this will be described in this movie:
- Measure Drift speed, due to beam wind with no propulsion;
- Measure drift speed using full thrusters
- Estimate wind & current limits to be potentially encountered by thrusters – or current...
- Finally there is a simple formula as Rule of Thumb: the transverse drift speed is about 7-8% of wind speed!

Understanding the fundamentals of the pivot point is highly required for understanding the alteration of the courses. Pivot point is an imaginary point on the vessel which turns on a circular path on the perimeter of vessel’s turning circle when the vessel makes a turn. The knowledge about the position of the pivot point in a manoeuvring situation provides the ship handler with the information on the geometry of motion of the ship.

Here is the latest version of the professional handbuch of "pilot Ladder Safety" for the rigging and the use of pilot ladders by Herman Broers from July 2021.

Fathom Safety was established as a not for profit organisation dedicated to improving maritime pilot transfer safety. Here is a guide to pilot ladder rigging. We hope you like it!

Hike Metal is excited to announce the launch a new vessel, here are the specs: Introducing the new HIKE Navigator! This 38' Pilot Boat has an impressive 13.3 ft beam. Powered by two Volvo Penta Diesel engines, this vessel can run at a max speed of 39 knots (45MPH, 72KMH) and has a 300 mile range. Hike Metal is a world Class custom boat builder offering unparalleled design of maritime engineering, production, and manufacturing of a variety of boats and ships for commercial, government, and...

At the end of the year and before Christmas, we were able to find a variety of offers for pilots who would like to change in the coming year.