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.

Safe Passage in The Singapore Strait is a training package of two videos and an Interactive computer-based learning module produced by the maritime authorities of Indonesia, Malaysia and Singapore. The aim is to improve safe navigation in the Strait. It is distributed free of charge worldwide. Copyright is with the Maritime and Port Authority of Singapore (c) 2016.

This video shows an introduction on the Spiral-Test-Manoeuvre and describes the procedure how to steer through this manoeuvre and measure the data needed. The results will be displayed in a characteristic diagram allowing to identify stable and unstable conditions and related, detailed information, e.g. spiral loop width and height, rudder angle of neutral effect. Samples of stable and unstable ship behaviour demonstrations will be shown by Fast Time Simulation using the SAMMON Planning tool.

From "Casual Navigation": In this video, we investigate the Pilot Ladder. It is a crucial piece of equipment, used for embarking and disembarking a harbor pilot at sea.(contains advertising)

The Arctic magnetic pole does not move anymore. It runs, faster and faster. In recent years, even faster than expected. Therefore, geo-researchers have now had an unscheduled change to their world model and adjust their calculations, so that navigation with compass and other navigation aids such as a Pilot Plug, used by pilots around the world, continue to work.

Shiphandling discussion about meeting and overtaking situations in a close quarters situation where hydrodynamic effects will come into play between ships. The lecture continues and discusses Bank Effect.

Gustavus, AK – Armstrong Marine USA of Port Angeles, WA recently delivered the 45’8” x 16’ semi-displacement catamaran Serac to the National Park Service (NPS) for use in Glacier Bay National Park and Preserve.

Poseidon Sea Pilots, which will start operating in the Port of Brisbane in January, will be based at Mooloolaba, Redcliffe and Brisbane.