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 Safe Passage in The Singapore Strait - Eastbound

published on 11 July 2020

Safe Passage in The Singapore Strait is a training package of two videos and an Interactive computer-based learning module produced by the maritime authorities of Indonesia, Malaysia and Singapore. The aim is to improve safe navigation in the Strait. It is distributed free of charge worldwide. Copyright is with the Maritime and Port Authority of Singapore (c) 2016.

Article Electronic Chart Standards: IHO ECDIS and ENC

by Marine-Pilots.com - published on 29 October 2019

Found on YouTube:

Tom Mellor - Chairman of the IHO Electronic Navigational Chart Working Group (ENC WG) and Head of Digital Standards at the UKHO - explains what the IHO's ECDIS and ENC Standards mean.

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

Article Pilot Ladder Handbook by PTR Holland (latest version)

by PTR Holland® B.V. - published on 3 February 2024

The latest summary from PTR Holland on the subject of pilot ladders. Here is the most important information on maintenance, use and replacement & insepection record book.

Video Technical Seminar - The role of the Habourmaster by The Nautical Institue

published on 29 November 2022

The SW England Branch debates the varied and critical role of the Harbourmaster.

Article The world's largest container ship "Ever Ace" completes its first transit through the Suez Canal

published on 16 October 2021

On August 28, the world's largest container ship completed its first crossing in the Suez Canal. Due to its huge size and this is the first voyage of the ship, it has received extra attention and special treatment from the Suez Canal Authority (SCA).