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

Opinion Pilot ladders: Compliance by design, failure by operator

by Herman Broers - published on 10 March 2022

It is not often that this blog is used to show bad practice, however in this case some pictures tell a whole story. Ship is compliant by design for rigging a combination. How about the operator(s)?

1

Video How Stabilisers Reduce A Ship's Roll

published on 4 July 2019

Stabilisers are used to reduce the amount of roll experienced by large ships.
In this video, we look at a few different stabilisation techniques. We investigate how different methods work and how successful they are at reducing a roll.

0

Video Knud Benedict Presentation on “Digital Twins” at IMLA SMU Seminar

published on 28 October 2020

This is the recording of the presentation with the title:
“Digital Twins" as Key Maritime Technology Innovations for MET - and for Operation of Intelligent Ships
It was held at the MET Training Course by Shanghai Maritime University on Oct 27 2020 on the occasion of IMLA 40th anniversary

0

Article Dissertation: Reducing the subjective impact in maritime simulator assessment (2020)

published on 14 October 2021

"A performance assessment tool for maritime pilotage operations" - by Jørgen Ernstsen, Norway
When the ship is approaching or leaving a port, a local navigational expert, the pilot, is often provided for assisting the bridge team to safely and efficiently navigate the littoral waters.

0

Video Port of Los Angeles: Career RePORT - Port Pilots Edition

published on 8 May 2021

Career RePORT encourages all students and educators to submit questions you want to ask a Port of Los Angeles employee: what kind of job they do at the Port, how they entered their career field, who their favorite superhero is, or what they made for dinner last night. This episode features John Mayer, Port Pilot. In his role, John: - Drives the 400-meter container ships containing goods in and out of the Port every day. - Safely navigates the cruise ships that are transitioning to and...

0

Video Husky Salvage Cruise Ship Pilot Run, Road Town, Tortola, BVI

published on 28 June 2022

In the pre-dawn hours and many other times of the day, local pilots safely guide cruise ships and cargo ships into BVI ports. The pilots provide local knowledge to the ships' captains to ensure safe arrivals and departures. In order to do this, it requires the pilot to climb from one moving vessel to the other. While this maneuver is taking place, the pilot vessel must maintain speed and stay parallel to the ship, allowing the pilot's safe transfer from one vessel to the other. They make...

0

Opinion Simulators in Marine Pilot Training: AMPI Position Statement

by Australasian Marine Pilots Institute - published on 18 October 2024

One of AMPI’s core missions is to advocate for the safety and well-being of marine pilots, and an essential part of that work is developing Position Statements.

0