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 Port Dampier Marine Pilot Boarding Ship via Helicopter - Animation

published on 8 July 2024

Experience the thrilling moment when a Port Dampier Marine Pilot boards a ship via helicopter! Get a bird's eye view of this stunning animation capturing the precision and skill involved in this critical maritime operation. Perfect for maritime enthusiasts, professionals, and anyone fascinated by sea adventures. Don’t forget to like, subscribe, and hit the bell icon for more maritime insights! Links to Social Media: YouTube: www.youtube.com/@elementtree2287 LinkedIn: https://www.linkedin....

Opinion Bow Truster Effect on Ship's Headway

by Capt. Hugues Cauvier - published on 14 July 2022

When the bow thruster has been in operation for a while, pilots often notice that the ship not only turns but also gains speed. But why is this? Opinion by Capt. Hugues Cauvier.

Video Centre for Marine Simulation (CMS) Marine Institute

published on 15 September 2021

Video Very descriptive: Piston Effect when entering lock.

published on 10 May 2020

Two new locks were introduced in 2009 for training in the new Panama lock conditions with or without tug(s). This video shows the famous "piston effect" when entering the lock at an impressive speed of 10 knots with a high blockage factor.
Port Revel provides shiphandling training using manned models for maritime pilots, masters and officers: http://www.portrevel.com

Video Marine pilot apprenticeships - British Associated Ports

published on 5 October 2019

Information video: How to become a Marine Pilot.

Article China: 200 pilots have been quarantined

published on 3 January 2022

Vessels are being stranded at ports on the river due to the lack of pilots and the line-up of vessels forced to wait in the anchorage outside the estuary is increasing rapidly. Owners are unclear how long the problem will last

Opinion Obituary of Captain Pilot Troy Evans (New Zealand)

by Frank Diegel - published on 5 January 2022

Many people we know only through the internet and we communicate by mail, chat or via social media. But this is also a way to build stable relationships and a good working relationship.