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 Shiphandling: Pivot Point and Transverse Thrust

published on 22 May 2022

Gavin Buchanan on YouTube: "Some of the best Ship Handling videos available online. Studying for my Master 3000 and have found these videos incredibly helpful. Thank you for making these free for students!"

0

Video Simplified Vector Approach for POD forces – samples and limitations

published on 23 February 2022

This movie belongs to the operation of ships with POD propellers and discusses the approach for using a vector model from only the pods’ thrust forces as resulting force to imagine the potential effect of the pods on manoeuvring motion.

1

Video SImulator Training

published on 2 February 2022

Practicing in the new port before we have todo it for real.

0

Article Board of commissioners of Pilots of the State of New York

published on 22 December 2021

At the 27 October 2020 meeting, the Board reviewed the SHPA grant request for a pilot ladder climbing training program.

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 Heroes or Hostages?

by Ivana-Maria Carrioni-Burnett - published on 1 October 2020

“Definitions": ‘Hero’: person who is admired for their courage, outstanding achievements, or noble qualities OR person greatly admired for their exceptional qualities or achievements

‘Hostage’: person seized or held for the fulfilment of a condition OR person who is illegally held prisoner until certain demands are met by others

0

Article Capt. Kevin Vallance awarded the Merchant Navy Medal

by Marine-Pilots.com - published on 13 November 2020

Captain Kevin Vallance awarded the Merchant Navy Medal for services to Maritime Safety.

3