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

Article Pilots’ Pocket Guide and Checklist - Second Edition released

published on 19 January 2022

The British Tugowners Association (BTA) in collaboration with the UK Chamber of Shipping has launched its new Pilots’ Pocket Guide and Checklist.

1

Video Introduction to Pilotage

published on 6 January 2021

Pilotage is being able to navigate safely into and out of a harbour/anchorage/port knowing where you are at all times, where your hazards are and a safe route in/out. This is particularly useful if you are heading into somewhere new or a challenging/busy area – or both!

0

Video New podded cruise ship at Port Revel

published on 24 October 2019

A new 1:25 cruise ship manned model, the "Voyager", was added to our fleet in 2014. She is 311 m long and is fitted with 2 azimuthing pods (and one Fixipod) and powerful bow thrusters. Training is conducted in emergency conditions like engine failures, crash stops, tight turns ...

0

Video Brazilian Pilotage Maneuver Simulation Center

published on 14 June 2022

Maneuvering ships are complex operations with high-risk involved. Just like nautical projects, they need to be simulated on training centers before approved. In a scenario of growing ships and limited waterways, state-of-the-art technology is essential to safely increase ports efficiency. That is why Brazilian Pilotage brought the most modern bridge simulator next to the maritime regulatory entities. Located a few minutes from government agencies, in the brazilian capital, our training...

1

Article Enhancing Pilot Ladder Safety: The Role of New SOLAS Regulations

by Herman Broers - published on 8 January 2025

The International Maritime Organization’s (IMO) upcoming amendments to SOLAS Chapter V, Regulation 23, represent a significant step forward in enhancing the safety of pilot ladder operations.

3

Article AIMPA Journal Issue VI - December 2020 for download here

by AIMPA - All India Marine Pilots' Association - published on 19 December 2020

The All India Maritime Pilots' Association has released its new journal for December

0

Video La station de pilotage des ports de Casablanca et Jorf-Lasf

published on 16 July 2020

The pilot station of the ports of Casablanca and Jorf-Lasfar operates in accordance with the 1937 Dahir on the reorganization of the pilot station of the port of Casablanca, which regulates all aspects of the organization and operation of the station, including the recruitment of pilots, as well as the pension and relief fund.
With the advent of Law 15/02 in 2005 on port reform, the station spontaneously adhered to it by creating a commercial company in application of article 13 of the said...

0