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 How AIS Works - Operation of AIS

published on 25 July 2019

How AIS Works - Operation of AIS

0

Video How AIS Works - Operation of AIS

published on 30 June 2020

This section should give a short introduction to: Operational aspects of AIS Functions and features Human aspects Key Points The AIS transponder unit. Automatic communication. SOLAS requirements. AIS Information sent by ships. Static information update. MMSI Dynamic information update. Voyage related information update. Checking AIS data. BIIT Display Of AIS data. Recommended AIS symbols. Sleeping target symbol. Activated target symbol. Selected target symbol. Dangerous target...

0

Article Electronic Chart Standards: IHO ECDIS and ENC

by Marine-Pilots.com - published on 29 October 2019

Found on YouTube:

Tom Mellor - C​hairman of the IHO Electronic Navigational Chart Working Group (ENC WG) and Head of Digital Standards at the UKHO - explains what the IHO's ECDIS and ENC Standards mean.

0

Article New app: Pilot´s Tug Assist Tool PTAT - Bollard Pull Calculation for Marine Pilots

by Capt. M. Baykal Yaylai - published on 19 February 2020

Required tug power and number of tugs needed in variable conditions of wind, current and waves isin most cases an assessment made by pilots based on their professional experience. However, assessments will raise questions by lawyers if something goes wrong. They will use tools to calculate what really is needed with respect to tug power and number of tugs. They have furthermore the advantage of time.

2

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 Impressions from the EMPA 2022 sponsor hall in Antwerp

published on 29 April 2022

The 56th EMPA General Meeting (27/04/2022 - 29/04/2022) was accompanied by an exhibition in which these companies participated:

0

Video KIEL CANAL Ship Collision Incident, General Cargo with Tanker

published on 28 July 2021

KIEL CANAL Ship Collided Collision incident general cargo BBC PARANA vs Motor Tanker ORASUND
Tanker went out of control after engine failure and collided with general cargo ship in Kiel Canal near Kiel locks, at around 0120 Local Time Jul 27, The ships were transiting Canal in opposite directions, both reportedly, sustained damages and were detained. Tanker was berthed near collision site, general cargo ship according to track, exited Canal and was berthed in port outside locks, Ships...

0