Video

How does GPS work?


published on 4 July 2019 326 -

by Casual Navigation
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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 Wind pure drift encounter - practical experiments for getting useful data

published on 8 July 2022

How to get information for wind & current limits to be potentially encountered by thrusters – or current? - this will be described in this movie:
- Measure Drift speed, due to beam wind with no propulsion;
- Measure drift speed using full thrusters
- Estimate wind & current limits to be potentially encountered by thrusters – or current...
- Finally there is a simple formula as Rule of Thumb: the transverse drift speed is about 7-8% of wind speed!

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Opinion A Corrected Version on Positioning of Pivot Point

by Capt. Santosha K. Nayak - published on 18 November 2020

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.

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Article SWATH & SWASH Technology - Smoother pilot boarding

by Marine-Pilots.com - published on 3 July 2020

SWATH and SWASH are interesting technologies that allow a vessel to sail much more calmly in high waves. A stable and calm position of the ship is especially important for pilot boarding.


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Video Pull-Out-Test-Manoeuvre for fast Identification of Yaw Stability – and Lyster-Diagram

published on 14 January 2022

This video shows an introduction on the Pull-out Test-Manoeuvre and describes the procedure how to steer through this simple manoeuvre: Turning circle and then put the rudder amidships. The final rate of turn allows to identify stable and unstable conditions.

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Article Wärtsilä simulator upgrade will enhance Le Havre pilot operations

by Marine-Pilots.com - published on 25 May 2020

The technology group Wärtsilä will supply a complete navigational simulator upgrade for the Le Havre pilot station in France. The intention is to provide the pilot station with a totally new simulator specifically adapted to the requirements of the pilots’ operations. The order with Wärtsilä was placed in February 2020.The new unique visualisation system to be supplied is based on 14 DP projectors, comprising seven main circular and seven ground projection systems. It features a panoramic 350-degree screen.

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Article The Future of Harbour and Sea Pilots: Opportunities and Challenges in the Digital Age

by Sven Stemmler - published on 18 November 2025

This expert article is based on a presentation given by Capt. Pilot Sven Stemmler at the MCN's (Maritimes Cluster Norddeutschland e. V. ) event ‘On the Future of the Pilot Profession’ at Fraunhofer CML in Hamburg on 9 September 2025.

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Video Palm Beach Pilots Handle Rough Seas in 4K

published on 26 February 2022

Unless you were paying attention on your last cruise, you might have missed the pilot boat bringing the pilot out to your cruise ship. Here's the story in 4K. Hey, be sure to subscribe too! Copyright © 2022 Richard L. Sites. All rights reserved. Any unauthorized reuse, copying, duplication, reproduction, or redistribution in part or in whole without written permission is strictly prohibited. To use this video for broadcast or in a commercial player contact me directly. Find me on:...

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