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.

Maritime pilots trace the roots of their profession back to the ancient Greeks and Romans when incoming ship captains employed experienced local fisherman to guide their merchant vessels safely into port. It’s a legacy of skill, strength, and sharp wits, and our Houston Pilots (“Pilots”) have been meeting vessels at Galveston’s bar to carry on these proud traditions for just shy of 100 years.

The SW England Branch debates the varied and critical role of the Harbourmaster.

On the occasion of the Maritime Safety Week (July 4-10), UK MAIB’s inspector Bill Evans refers to the issue of unsafe pilot ladders, a concern that has been regularly voiced by the industry.

Two new locks were introduced in 2009 for training in the new Panama lock conditions with or without tug(s). This video shows the famous "piston effect" when entering the lock at an impressive speed of 10 knots with a high blockage factor.
Port Revel provides shiphandling training using manned models for maritime pilots, masters and officers: http://www.portrevel.com

Serious Injury to Pilot delves into a real-world incident that resulted from a lack of attention to detail. A pilot falls from a ladder due to negligence.
Visit https://maritimetraining.com/Course/Serious-Injury-to-Pilot to purchase the full-length version.

(Please note: Anthony F Hoy has CASA Operational Certification for UAV Aerial Photography & Aerial Survey).
The Svitzer Marloo, a Z-Tech 2800 ASD Tug, is one of the few vessels in the world to regularly use the complex and potentially dangerous Centre Lead Forward manoeuvre to assist inbound and outbound bulk carriers in the execution of a 110 degree turn on entering and leaving Port Kembla. Tug Master Phil Jones explains how a dangerous maritime exercise, if properly executed, can deliver...

Taken from aboard the MS Westcott Pilot Boat this is the Algoma Harvester receiving mail on the Detroit River as they head downbound in the early evening hours of September 2nd, 2022
I had just been in Cleveland OH for the christening of the Mark W Barker the newest ship for the Interlake Steamship Company and left there on the 2nd to go to Toledo and see the National Museum of the Great Lakes and then I continued on to Detroit where I made this stop at the JW Westcott Company and met up...