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 Shipping Industry Guidance on Pilot Transfer Arrangements, Version 3

published on 13 January 2022

This guidance is intended to remind seafarers and companies of the vital importance of adhering to the rules and established procedures concerning the provision of safe boarding arrangements for pilots.

0

Article How AIS Works - Operation of AIS

published on 25 July 2019

The term Automatic Identification System (AIS) refers to a radio system that improves the safety and guidance of vessel traffic by exchanging navigation and other vessel data.

0

Video Types of ships: Basic introduction to ship accidents

by Dr. Captain Ahmed Sati - published on 17 July 2024

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.

0

Opinion Master pilot exchange (MPEX) – share your information

by Gard AS - published on 4 September 2020

The Master and pilot are dependant on each other for a safe and successful beginning or end of a voyage. They are both operating in a foreign environment.

1

Article GPS (Part 3) - Accidental interferences and intended Interferences by extern technical sytems

by Capt. Gunter Schütze, Thailand/Germany - published on 6 May 2020

The vulnerability of GNSS in shore-based use is definitely different and to be regarded as much more risky than on the high seas.

0

Video Pilot Boarding a cargo ship @ Amsterdam

published on 11 December 2020

This is one common method to board the pilot. And here it is a special boat which is very fast with new technology

0

Article Taiwan: Pilot fell while boarding container ship and died

published on 23 February 2022

Around 11 am local time yesterday (21 February), a pilot fell into the sea while boarding the feeder vessel Blue Ocean, which is operated by Shanghai Jinjiang Shipping on a China-Taiwan service.

1