Video

Yaw Stability of Ships - Basic Principles by Knud Benedict


published on 18 November 2021 351 -

Found on YouTube. Created by "ISSIMS - Innovative Ship Simulation". Originally published on 2021-08-29.
Yaw Stability is an important element of Ships Manoeuvrability - both for course keeping and turning ability. This first video in a series explains the Basic Principles of stability in steady state equilibrium conditions and the forces / moments involved. The role of the unstable moment due to drift angel and the stabilising damping moment due to rate of turn in the yawing motion will be discussed. Definitions of yaw stability during turning motion and on straight motion will be given. Samples of stable and unstable ship behaviour will be shown by Fast Time Simulation using the SAMMON Planning tool.
The next videos will demonstrate manoeuvres (e.g. Spiral Test, Pull-out Test and Zig-Zag Test) to identify and discuss the stability condition for ships and the different aspects contributing to yaw stability.

Join the conversation...

Login or register to write comments and join the discussion!
FL
Francesco Lo Nostro Italy
on 18 January 2022, 00:07 UTC

Nice explanation on turning and yaw stability. I think it’s important to consider all forces involved to the Pivot point and point of application of external disturbance, which changes according incidence of heading.
0

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 IALA Port & Waterway Risk Seminar - Chapter on Simulation by Knud Benedict

published on 22 October 2021

This video is an extract of some elements from lectures by Knud Benedict on "Simulation" as part of the seminars provided by the IALA World Wide Academy on the use of the "IALA Toolbox for Port & Waterway Risk Management".

0

Video Pilots Training in Brazil

published on 24 June 2022

Operators and supervisors of the operations center (atalaia) of Praticagem da Barra do Rio Grande participated in an update course in online and face-to-face mode. They had classes on nautical charts, electronic charts (ECDIS), radars, portable pilot units (portable electronic navigation equipment) and technical English. "There is no good operation without recurrent training with good tools", says pilotage operational director, practical Bernardo Ramos

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 M+ I Poor planning & lacking Master Pilot teamwork leads to collision of ship with Jetty

published on 8 July 2020

Maritime Training Videos series by Dhhunki Productions. Contact us for production of Maritime training & safety videos,Training Shoots & Films,Incident Analysis,Case Study Videos Corporate & Ad Films,Intro-Seminar-Conference Shoots,Documentary & Short films,Music Videos www.dhhunkiproductions.com E-mail: dhhunkiproductions@gmail.com Editors Note: For people in Europe and in the days of a general me-too debate, it may seem a little strange that a male captain meets a female pilot and seems...

0

Article Study on European maritime pilots: Working unusual hours and its relationship to job satisfaction

published on 1 October 2025

This article was published some time ago but is still up to date: The study focuses on maritime pilotage in seven European countries and analyzes the level of job satisfaction and its predictors.

5

Video Pilot Vessel SKUA Returning To Hawes Pier On Visit To South Queensferry Scotland

published on 17 February 2022

Tour Scotland 4K Winter travel video of the Pilot Vessel SKUA returning to Hawes Pier below the Forth Railway Bridge on visit to South Queensferry near Edinburgh.

0

Video IMPA CHIRP Safety Campaign 2024 Video

published on 16 September 2024

IMPA and CHIRP Maritime have collaborated on a video to support the 2024 IMPA Safety Campaign and Survey which takes place 1 - 15 October 2024. More details can be found at www.impahq.org.

0