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.

How AIS Works - Operation of AIS

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.

This article was published some time ago but is still up to date: The study focuses on maritime pilotage in seven European countries and analyzes the level of job satisfaction and its predictors.

Version from 1st May 2021: Ships that require the services of a pilot need to ensure that the Pilot Transfer Arrangements (PTA) they provide are in compliance with the requirements prescribed under SOLAS V/23 and IMO Resolution A.1045(27) [as amended by IMO Resolution A.1108(29)].

Manoeuvring large ships at close quarters and on shallow water is one of the most difficult aspects of shiphandling because of the complex hydraulic interactions depending on the ships' speeds, on the water depth and on lateral restrictions like in canals. Training is conducted both on meeting and on overtaking ships in shallow waters. This video shows how overtaking in a canal should be conducted: come in close to the stern and then move away from the bow that will be sucked towards your...

Time Lapse Video:The deep draught VLCC PISCES STAR is approaching the Port of Rotterdam, after navigating through the Eurogeul and Maasgeul deep water channels in the Southern North Sea. The VLCC is proceeding in Calandkanaal channel to her berth in the Petroleumharbour No. 5.
Before coming alongside the VLCC is stopped and swung in the channel. Four harbour tugs are made fast to assist the manoeuvring vessel. Mooringboats bring the VLCC's steel mooring wires ashore when she is coming...

Container ship SHAHRAZ and bulk carrier SAMUDRA SAKTI I are reported to run aground in Singapore Strait south of St John Island at around 1900 UTC May 10, close to each other, while proceeding in the same direction, probably trying to avoid collision. As of 0700 UTC May 11, both ships remain in the same positions, coordinates don’t change. SHAHRAZ is en route from Port Klang to Yangshan China, SAMUDRA SAKTI I is en route from Belawan to Bayah, southwest Java.