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 Centre for Marine Simulation (CMS) Marine Institute

published on 15 September 2021

Video OMC International - DUKC® Explained

published on 14 October 2019

A in-depth video explaining how DUKC® works.

Video Safety of Navigation vs. Commercial Pressure

published on 18 January 2021

Safety of Navigation vs. Commercial Pressure / ROMEILs Tv Commercial Pressures impacts the safety of the vessel, study says Seafarers are pressured to keep quiet and keep the ship moving by ship operators, who dont want to lose inccome. Ship's officers who bring safety issues to the attention of management are exposed to the risk of retaliation. As whistle-blowers they may face punishment, demotion or even termination. International Organization of Masters, Mates & Pilots (MM&P) has...

Video Electronic Chart Standards: IHO ECDIS and ENC

published on 29 October 2019

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 Physical Pilot Ladder Simulator (Chile)

published on 2 January 2020

This video has already been published for the first time in 2020. Please also note the second, more recent video in the appendix. This physical ladder simulator was designed for crew training in the ladder arrangement and for all the users especially for pilots.

Video Bellcraft pilot boat powered by Volvo Penta IPS

published on 23 March 2022

The busy Strait of Messina which separates the island of Sicily from the Italian mainland is now home to a new pilot boat, manufactured by Bellcraft and powered by Volvo Penta’s Inboard Performance System (IPS).

Video The Pilot Boat At Carlingford - Irish Working Landscape Scenery Autumn

published on 16 October 2020

This is Paddy Rooney, Coxswain of the Carlingford Pilot Boat, on the lough which separates County Down and County Louth. The boat operates out of a small jetty at Greencastle - so called after it's Norman castle near the shore and not far from the town of Rostrevor with it's beautiful park and colourful streets. In this film Paddy and his crew rendezvoused with a cargo ship at Greenore Port - which is also a uniquely preserved 1800's railway village .