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.

by Rhys Davies, current Apprentice. Published already in Feb. 2020 by ABP.

M+ releases the 1st video of ECDIS competency series on “Safety Settings” presented by Safe Lanes. Use them for training crew, enhance safety standards & professional knowledge. Stay tuned for our upcoming series on ECDIS competency, Anchor losses, Incidents, PCS & vetting preparations & Human Elements training. These “first of it's kind” learning videos are based on PSC & vetting observations to provide solutions & enhance your professional competency. Pls feel free to connect to get a...

Required tug power and number of tugs needed in variable conditions of wind, current and waves isin most cases an assessment made by pilots based on their professional experience. However, assessments will raise questions by lawyers if something goes wrong. They will use tools to calculate what really is needed with respect to tug power and number of tugs. They have furthermore the advantage of time.

Tom Mellor - C​hairman of the IHO Electronic Navigational Chart Working Group (ENC WG) and Head of Digital Standards at the UKHO - explains what the IHO's ECDIS and ENC Standards mean.

What a great pleasure to meet these guys at the harbour - they could not have been more helpful and forthright about their work. At first glance, the glide of these orange powerboats up and down Belfast Lough seems an almost effortless task, but close up this is a very skilled trade and constant management of risk 24/7 in high and low seas, jumping from ship to boat to land taking safe control of the great volume of steel vessel coming in and out of this busy port. Though a hub of...

Gladding-Hearn Shipbuildiing, Duclos Corporation, has taken an order for a rigid-bottom, soft-sided pilot boat from the Lake Pilots. The Resilient class high-speed launch is the Michigan pilots’ third boat built by the Somerset-Mass. Shipyard since 1979.