Video

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


published on 26 November 2021 259 -

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.
What's your opinion on this?
Login or register to write comments and join the discussion!
Read more...

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...

1

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

0

Opinion Beyond Experience: Building the Next Generation of Maritime Pilots

by Maritime Pilot Abolfazl Farajnezam - published on 8 May 2025

Pilot recruitment has traditionally been based on seniority, and extensive sea experience. However, a more modern approach, hiring younger, motivated candidates with structured training, offers an alternative path with compelling advantages.

1

Video How GPS works? Trilateration explained

published on 4 July 2019

How GPS works? Trilateration explained

0

Article Maritime Pilotage and Sustainable Seaport: A Systematic Review

by Seyed Behbood Issa-Zadeh & Claudia Lizette Garay-Rondero - published on 14 August 2025

Article by Seyed Behbood Issa-Zadeh & Claudia Lizette Garay-Rondero

1

Video Interaction Bank Effect

published on 30 June 2022

Educational and descriptive video

1

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!

0

Video Hart Marine & Yaringa Boat Harbour: Big Things Ahead | Club Marine TV

published on 14 January 2022

John Willis is checking out the facilities, history and the future of Hart Marine in Mornington as well as Yaringa Boat Harbour.

0