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

This movie belongs to the operation of ships with POD propellers and discusses the approach for using a vector model from only the pods’ thrust forces as resulting force to imagine the potential effect of the pods on manoeuvring motion.

Ships don't exactly have brakes. Lou Vest, a retired Houston ship channel pilot tells us about a close encounter between a ship and a barge.
https://houstonmaritime.org

The Seminar aims to inform Member States, intergovernmental organizations and non-governmental organizations in consultative status with IMO about the societal value of maritime pilots and pilotage as a public service. The IMO Secretary-General has recognised maritime pilots as having always been vital to ensuring the safety of navigation in key ports and shipping lanes globally and playing a crucial role in sustaining the global supply chain using specialized knowledge and expertise....

Learn from other accidents. Watch an accurate reenactment of a collision involving an undisclosed VLCC tanker.
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What’s expected to be the first autonomous container ship is at the beginning of a two-year pilot. Norwegian fertiliser giant Yara is behind the vessel, which will gradually transition to fully autonomous navigation. The global maritime industry is a major emitter of greenhouse gases, and it is thought this could be one step towards a green shipping revolution. Please subscribe HERE http://bit.ly/1rbfUog #ClimateChange #Norway #BBCNews

Ladders are the bridges for crossing the rough seas of our lives.
When you are a Marine Pilot at work, hoping and praying that the ladders which let you embark the vessel are stable, safe and not dangerous.
In Memoriam of the late Captain Dennis Sherwood who passed away on Monday the 30th of December.