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 1000 stanchions around… Which ones are correct and which ones are killers?

by Arie Palmers - published on 6 December 2022

Stanchions therefore are an often-overlooked part of a pilot transfer arrangement and therefore I
want to give them more attention in this article. They proved to be the cause of a whole series of accidents, some of which were even fatal.

2

Video Safety training course for German maritime pilots II -"Person over board"

published on 12 June 2026

"Person over board - all pilot boat crewmembers and pilots should be trained in recovery as realistic as possible. Don’t wait for a real emergency to find out that something doesn’t work as intended!"

0

Article Pilot dispatching problem along a maritime corridor: a case study in the St. Lawrence River

published on 13 May 2025

This study presents a novel decision support process for a pilot dispatching problem in the St. Lawrence River. It integrates a comprehensive set of time-based performance measures, including working time, waiting time, and skill level differences, to optimize fairness and operational efficiency in pilot dispatching.

0

Video BRIDGE PROCEDURES CHECKLISTS | PART 1 - PILOT CARD

published on 20 June 2023

Bridge procedures guide checklist, pilotage, pilot card, Master pilot information exchange, MPEX, wheelhouse poster, pilot boarding arrangement, ship's particulars. Thank you for supporting our channel: paypal : uasupplyltd@gmail.com ✅We offer quality service, without weekends and holidays, order fulfillment, as soon as possible with the understanding and individual approach to each client. 🚢The main directions of the company UASUPPLY: - A comprehensive supply for merchant ships of...

0

Opinion A Corrected Version on Positioning of Pivot Point

by Capt. Santosha K. Nayak - published on 18 November 2020

Understanding the fundamentals of the pivot point is highly required for understanding the alteration of the courses. Pivot point is an imaginary point on the vessel which turns on a circular path on the perimeter of vessel’s turning circle when the vessel makes a turn. The knowledge about the position of the pivot point in a manoeuvring situation provides the ship handler with the information on the geometry of motion of the ship.

0

Video Navigating on St Lawrence River towards cargo ship Federal Kumano

published on 8 November 2022

Waiting on the porch of boat pilot cabin. Putting on life vest and embarking on boat pilot speedboat. Navigating on St Lawrence River towards cargo ship Federal Kumano. Embarking on cargo ship. Talking stairs up tp navigation bridge. Meeting crew.Taking over controls of Federal Kumano.

0

Opinion New article by The Standard Club: "Remote pilotage - perspective and risks to consider"

by Marine-Pilots.com - published on 8 June 2020

Published on 5th June 2020. Author Capt. John Dolan says: "We would not recommend remote pilotage when the ship is berthing or unberthing. These operations require the presence and advice of an experienced pilot who has extensive local knowledge and who is usually assisted by port tugs."

1