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

Article A review of the ship’s pivot point: Science, Maths and Observation’ Where is the centre of a ship’s rotation?

by Tim Cummins, Harbour Pilot, Portsmouth International Port - published on 17 July 2020

This my attempt to do just that. This is a summary of all scientific papers and articles that I could find about the ship’s pivot point. I have added links to any videos associated with the publications and have also included any useful diagrams or equations that the authors published to help explain their research.

0

Article Education And Training Of Pilots In The Netherlands

by Eline van der Vlist-Lammers (Coordinator education and training for STODEL) and Ed Verbeek (Master Mariner) - published on 30 September 2022

Article originally published in SWZ|Maritime September 2022

Through the years, the Dutch Pilots have developed a system of selection, initial education and continual professional training. What is the current state of affairs?

3

Video Successful overtaking of another ship in a canal - Port Revel Shiphandling

published on 10 May 2020

Manoeuvring large ships at close quarters and on shallow water is one of the most difficult aspects of shiphandling because of the complex hydraulic interactions depending on the ships' speeds, on the water depth and on lateral restrictions like in canals. Training is conducted both on meeting and on overtaking ships in shallow waters. This video shows how overtaking in a canal should be conducted: come in close to the stern and then move away from the bow that will be sucked towards your...

0

Article What is a SWASH pilot boat? What's the difference to the SWATH technology?

by Marine-Pilots.com - published on 5 June 2020

At the A&R shipyard in Germany, the successful principle of SWATH boats was further developed in 2013: The SWASH principle allows sea-going, smaller and more economical boats.

0

Video Luke Pollard tests out the new pilot boat

published on 31 January 2022

Keep up to date:
Facebook https://www.facebook.com/LukePollard
Twitter https://twitter.com/LukePollard
Instagram https://www.instagram.com/lukepollard

0

Video Awesome boarding video (360° camera), by Finnpilot

published on 18 October 2021

Pilot boat L243

0