Video

Zig-Zag-Test-Manoeuvre for Yaw Stability, IMO Manoeuvring Standards and Crash Stop

published on 26 November 2021 - 259 -

Show comment section |

Found on YouTube. Created by "ISSIMS - Innovative Ship Simulation". Originally published on 2021-11-25.

This video is now the last of the Yaw Stability series. It shows an introduction on the Zig-Zag-Test-Manoeuvre and describes the procedure how to steer through this periodic rudder manoeuvre, switching the rudder depending on the heading change. Some characteristic parameters are explained, specifically the overshoot angles following counter rudder are suitable to decide on stable and unstable conditions as part of the IMO Standards for ships manoeuvrability.
Samples of stable and unstable ship behaviour demonstrations will be shown by Fast Time Simulation using the SAMMON Planning and the SIMOPT tool. The results are discussed with respect to the IMO limit values. Finally, the effect of yaw stability on the tracks of Crash Stop Manoeuvres are discussed, demonstrating the impact of small turning rates when starting to reverse the engines.

ISSIMS GmbH
Innovative Ship Simulation And Maritime Systems

Education

What's your opinion on this?

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 Critical Ship navigation done with perfection

published on 31 January 2022

Video How port pilot sail out ship from the port? Grimaldi lines catania roro ship

published on 22 April 2022

In this video I will show you Grimaldi Lines Catania RoRo Ship

Video Maritime Pilot Training III - Man overboard manoeuvre

published on 12 May 2021

Training video III on the correct behaviour in case of man overboard

Article What is a Portable Pilot Unit (PPU)?

by TRENZ GmbH - published on 1 April 2024

Video Route Planning With ECDIS

published on 11 July 2020

What is voyage planning, Who is responsible, how do we comply with the rules and how do we utilize the features and functions available in an ECDIS? 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://youtu.be/s5ebZQru7mg Sailing With ECDIS https://youtu.be/GZrmzE24K44 Whats is Electronic Chart Display? https://...

Article Future Tug Master Training

by Henk Hensen - published on 11 July 2023

The role of a Tug Master undertaking harbour towage activities is a very specific one. He/she has to, alone or in cooperation with other Tug Masters, assist a ship in a safe and efficient way using his/her tug to the best of its qualities.

Video Wind Balance on straight track with theory

published on 24 November 2020

Wind Balance on straight track - using SAMMON to learn the theory and the effect of rudder and drift to reach the balance in steady state equilibrium conditions on straight track. Limits of steerability will be shown and how turn under strong wind.