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How GPS works? Trilateration explained


published on 4 July 2019 184 -

How GPS works? Trilateration explained
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Article GPS (Part 1) - Structure, mode of operation, technical and physical fundamentals of GPS

by Capt. Gunter Schütze, Thailand/Germany - published on 30 January 2020

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.

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Article GPS (Part 2), physical and technical errors of GNSS - an error analysis

by Capt. Gunter Schütze, Thailand/Germany - published on 26 February 2020

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,

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Article GPS (Part 3) - Accidental interferences and intended Interferences by extern technical sytems

by Capt. Gunter Schütze, Thailand/Germany - published on 6 May 2020

The vulnerability of GNSS in shore-based use is definitely different and to be regarded as much more risky than on the high seas.

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Video Theory behind Turning dynamics of ships

published on 6 May 2020

"ISSIMS GmbH - Marine Prediction Technology" SAMMON Lecturing Video describing "Theory behind turning dynamics of ships" ------------------------------------------------------------- SAMMON - the IDEAL tool to identify manoeuvring capabilities of a ship - SAMMON - learning the EFFECTIVE way Comment by Gunter Schütze via LinkedIn: "Prof. Benedict a very interesting video by HS Wismar / Maritime Simulation Center Warnemünde ( MSCW) & Innovative Ship Simulation and Maritime Systems GmbH...

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Video GIDAS - GNSS Interference Detection & Analysis System

published on 29 April 2021

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...

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Video Failed overtaking of another ship in a canal - Port Revel Shiphandling

published on 10 May 2020

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 can easily fail.
More information: http://www.portrevel.com/3781-shiphan...

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Article New app: Pilot´s Tug Assist Tool PTAT - Bollard Pull Calculation for Marine Pilots

by Capt. M. Baykal Yaylai - published on 19 February 2020

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.

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Video Columbia River Bar Pilots conduct man overboard training

published on 28 April 2026

On April 20, 2026, the Columbia River Bar Pilots conducted a MOB drill with the U.S. Coast Guard Station Astoria.

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Video Kayleigh Ward - Belfast Harbour Pilot Boat Crew

published on 11 July 2024

Our Pilot Boats play a crucial role in maintaining the daily flow of maritime traffic to and from Belfast Harbour. Working 24/7, 365 days a year, in all kinds of weather conditions, this dedicated team carries out the vital task of bringing the Harbour Pilots out to arriving vessels, where they guide them safely into their berths, as well as disembarking them, often in challenging sea conditions on Belfast Lough.
Kayleigh Ward, our sole female pilot boat crew member, reveals how she gave up...

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Video Time Lapse: Pilotage of an inbound LNG Carrier, Port of Rotterdam

published on 6 July 2019

Time Lapse Video: An inbound LNG carrier arrives at the Port of Rotterdam. At sea, in the Eurogeul channel, two maritime pilots have joined the vessel. Between the breakwaters four harbour tugs (Smit Harbour Towage) make fast to assist her manoeuvre. In the Beerkanaal channel the LNG carrier is stopped and swung before entering the Nijlhaven harbour. While approaching LNG Jetty 1 the ship's mooring lines are taken ashore by mooringboats (Koninklijke Roeiers Vereeniging Eendracht).
Pilot...

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