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 Hugues Cauvier: Understanding the ship's pivot point (complete video)

by Capt. Hugues Cauvier - published on 3 September 2024

This video has been recut and edited by the creator Hugues Cauvier. Previously there were three episodes, which have now been combined into one.

Article What is a Portable Pilot Unit (PPU)?

by TRENZ GmbH - published on 1 April 2024

Article e-book and international book order available: "Theory and Practices of Marine Pilotage" by Capt. Santosha K Nayak

published on 7 August 2020

This book was only available in some areas, now the author has created an e-book version. Furthermore it´s available on amazon as a paperback.

Completely new book on Ship manoeuvring techniques based on new revealing facts which have been brought to light. Must read for all the mariners to understand the behaviour of ships and how to control her behaviour during manoeuvring.

Video A Global Perspective | Maritime SheEO Conference 2021

published on 22 December 2021

What has the current experiences and developments in Maritime Pilotage Training been like? This session takes a global perspective at the conference. At the panel are: 🌊 John Barker, Senior Marine Pilot, Port of Auckland (New Zealand) 🌊 Captain Hanna Odengrund, Marine Pilot, Sweden Maritime Administration 🌊 Nurul Arrienne, Marine Pilot, Port of Tanjung, Malaysia 🌊 Fatouma Ali Ahmed, First Female Marine Pilot, Port of Djibouti 🌊 Reshma Nilofer, First Female Marine Pilot (India) 🌊...

Video Why Can't Ships Reverse Around Corners?

published on 20 September 2024

This video explores the question of why ships are so difficult to manoeuvre in reverse.

Article Operational notes & recommendations on Portable Pilot Units (PPU)

by United Kingdom Maritime Pilots Association - published on 2 December 2021

OPERATIONAL NOTES AND RECOMMENDATIONS by UKMPA, February 2017
The introduction of modern lightweight Portable Pilot Units (PPU) for use during pilotage has proved to be another major advance for pilotage operations worldwide.

Video Safe Boarding of Vessels at Sea with GAC

published on 23 February 2022

Boarding a vessel at sea can be dangerous. By following simple rules, it can be done safely. This safety video shows you how to leave the launch boat and climb the ladder when boarding vessels at sea safely as well as boarding preparations, safety precautions and boarding under special conditions. The 3 types of boarding arrangements for pilot are also explained. Watch with sound on. Transfers are normally safe when everyone takes all the precautions. If you think it is unsafe, remember to...