Video

Pull-Out-Test-Manoeuvre for fast Identification of Yaw Stability – and Lyster-Diagram


published on 14 January 2022 156 -

Found on YouTube. Created by "ISSIMS - Innovative Ship Simulation". Originally published on 2021-09-28.
This video shows an introduction on the Pull-out Test-Manoeuvre and describes the procedure how to steer through this simple manoeuvre: Turning circle and then put the rudder amidships. The final rate of turn allows to identify stable and unstable conditions. Samples of stable and unstable ships will be shown by Fast Time Simulation using the SAMMON Planning tool. The role of the rudder angle of neutral effect are explained together with a comparison of Spiral test and Pull-out manoeuvres – and also for the so called “Lystergram”. The difference in stability for ahead and astern motion is demonstrated for a tanker in ballast condition.
Finally, a funny discussion of my experience in a rowing boat with my family will boost your imagination and completes the overview on effects of Yawing stability.
The next videos to follow will demonstrate other manoeuvres (Zig-Zag Test) which are also helpful to identify and discuss the yaw stability for ships.
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

Video Why Can't Ships Reverse Around Corners?

published on 20 September 2024

This video explores the question of why ships are so difficult to manoeuvre in reverse.

0

Opinion Scientific Fact: The ‘traditional’ understanding of the ship’s pivot point is wrong!

by Tim Cummins, Harbour Pilot, Portsmouth International Port - published on 9 July 2020

In fact, the pivot point that we “see” is a trick of the eye, it looks like the ship is rotating about this point but in fact it is elsewhere, a point that you cannot see.

Video GoPro Sticker Tips: Time-lapse vessel videos with telemetry data widgets

by River Pilot Kris De Decker - published on 29 September 2021

Tips by Captain Kris.
kris@mes.de
krisdedecker

0

Video Curso Maritime Pilot AND Pilotage Transportation – Safety and Sea Survival Training

published on 12 March 2024

ANPRA y la Escuela Naval de Aviación Naval presentan el curso "Maritime Pilot AND Pilotage Transportation – Safety and Sea Survival Training (MP-SISST)".
Este programa integral está diseñado para preparar a profesionales de la navegación con las habilidades necesarias para enfrentar los desafíos del mar con confianza y seguridad. Desde técnicas avanzadas de pilotaje hasta protocolos de supervivencia en el mar, este curso ofrece un enfoque completo y práctico para garantizar la seguridad y...

0

Video GIDAS - GNSS Interference Detection & Analysis System

published on 29 April 2021

OHB Digital Solutions GmbH develops systems for monitoring the GNSS frequency bands as well as detection, classification and localization of intentional or unintentional interference sources. Many stakeholders and applications as well as critical infrastructure providers are relying on GNSS to provide their services. Since Global Navigation Satellite Systems (GNSS) are widely used in safety and value critical applications, GIDAS detects, classifies and localizes any GNSS interference...

0

Video Maritime Pilot Cosco Busan ep2

by Dr. Captain Ahmed Sati - published on 26 July 2024

Welcome aboard, fellow maritime enthusiasts! Today, we embark on a voyage into the intricate world of ship types. From massive container ships to nimble oil tankers, we'll explore the unique challenges each vessel presents. Whether you're a seasoned sailor or a curious landlubber, our channel will guide you through the fascinating diversity of the ships that navigate our seas. Join us as we delve into the design, function, and complexities of these maritime marvels. Don't forget to like,...

0

Article A Guide to the Career of a Maritime Pilot

published on 30 June 2021

A maritime pilot, also known as harbor pilot, is a mariner who maneuvers ships through dangerous or ongested waters, such as harbors or river mouths.

1