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.

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...

Full title: "The Digital Transformation of Canadian Hydrographic Offices, and the Corresponding Contributions to Seabed 2030 and Lakebed 2030"
Presented at the Lakebed 2030 Conference in 2021
Get involved at Lakebed2030.org

Educational and descriptive video

OHB Digital Solutions GmbH develops systems for monitoring the GNSS frequency bands as well as detection, classification and localization of intentional or unintentional interference sources. Many stakeholders and applications as well as critical infrastructure providers are relying on GNSS to provide their services. Since Global Navigation Satellite Systems (GNSS) are widely used in safety and value critical applications, GIDAS detects, classifies and localizes any GNSS interference...

The latest summary from PTR Holland on the subject of pilot ladders. Here is the most important information on maintenance, use and replacement & insepection record book.

Editors note: A film of a pilot boat has just been published on YouTube with the title "How Dangerous being in a Pilot Boat..." on YouTube. I'm not sure if this really shows a dangerous maneuver, maybe the experts can comment on it here.
But in principle it is problematic to approach the ship in such a small Pilot Boat in the wake from astern and cross the waves there. I remember an accident from Finland in December 2017 where the boat capsized and people died. Is this situation shown here...

The Coast Guard Office of Investigations and Analysis has released Marine Safety Alert 05-21, to notify mariners to a potentially dangerous situation involving corrosion of the turntable pin on accommodation ladders.