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
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,
Article GPS (Part 3) - Accidental interferences and intended Interferences by extern technical sytems
by Capt. Gunter Schütze, Thailand/Germany - published on 6 May 2020
Video Hugues Cauvier: Understanding the ship's pivot point (complete video)
by Capt. Hugues Cauvier - published on 3 September 2024
Video How Ship Anchor Works? - Procedure For Anchoring a Ship at Sea
published on 11 July 2020
#Anchor #shipanchor #windlass Anchoring is one of the very frequent operations onboard ships. A number of variables and external factors influence the duration and location of an anchoring operation. While the type of seabed is of utmost importance during anchoring, soft muddy grounds or clay bottoms are best preferred. It should be taken care that the anchoring bottom is free of power lines, submarine cables, pipelines or rocks. Various methods on anchoring include consideration of...
Video Chart Projections and Chart Accuracy - ECDIS
published on 11 July 2020
With the increasing accuracy and reliability of navigational receivers, this part of the video module will try to establish a better understanding of the mathematical definition of the Earth’s surface and mapping of this curved shape onto a plane surface. Chart Projections and Chart Accuracy https://youtu.be/kOaWimnAN-U Principle Used For Creating Electronic Charts https://youtu.be/xY_MBubhUFs Display of Electronic Charts https://youtu.be/qnoFO0T-cLo Route Planning With ECDIS https://...
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...
Video Wind Impact on Ships Turning Motion
published on 20 January 2021
This video complements the earlier demonstration of wind effect on straight track and shows now wind effect on turning circles. It can be seen that during a turn under strong wind the ship reduces turning when it comes close to equilibrium on straight track - if the Wind-to-ship speed ratio is big enough then the ship even goes straight instead of turning. This is shown for three samples for Head, Stern wind and Beam wind. The turning can be increased if the ratio of Wind speed-to-ship...