Video

Wind drift making headway - practical experiments for voyage planning and Rule of Thumb


published on 7 April 2021 254 -

Found on YouTube. Created by "ISSIMS - Innovative Ship Simulation". Originally published on 2021-03-08.
Here are described some experiments to get data for voyage planning:
- how to measure wind effects and prepare ship specific diagrams to estimate required drift angles and also rudder angles for wind balance
- to be applied for voyage planning, considering expected operational conditions, specifically for preparing manoeuvring plans for Port arrival and departure planning!
- analysing theses data a simple formula could be derived to calculate the drift angle ß depending on absolute wind speed VA, encounter angle aA and ship speed Vs to:
ß= arctan (CD*(VA +Vs*cos aA)*sin aA)/Vs)
And all this is demonstrated by means of the unique SAMMON Planning software based on Fast Time Simulation of ship manoeuvres...
Enjoy, share and give some thumbs up, if you are satisfied with the movie - and my haircut!
Knud Benedict

Join the conversation...

Login or register to write comments and join the discussion!
SO
Mr Sean O’Toole ABP - Associated British Ports, United Kingdom
on 7 April 2021, 16:13 UTC

In my experience, a ship moving ahead, rudder amidships, the ship will develop a rate of turn into the wind. However the first manoeuvre on this simulator with rudder midships does not show this, in fact no RoT at all. Quite often at work, I will tell the bridge team I am about to start a turn to starboard/port, order midships and then try to crack a joke about the ship has been here before and knows where to go!!
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 Book “Remote Pilotage” by Antti Rinkinen

published on 7 January 2022

Finland's first remote pilotage of a cargo ship will take place at the beginning of 2022. The first remote pilotage permits may be issued in 2025.

0

Video Spiral-Test -Manoeuvre for detailed identification of Yaw Stability using Samples of Cruise Ship

published on 29 September 2021

This video shows an introduction on the Spiral-Test-Manoeuvre and describes the procedure how to steer through this manoeuvre and measure the data needed. The results will be displayed in a characteristic diagram allowing to identify stable and unstable conditions and related, detailed information, e.g. spiral loop width and height, rudder angle of neutral effect. Samples of stable and unstable ship behaviour demonstrations will be shown by Fast Time Simulation using the SAMMON Planning tool.

0

Video Maritime Training: Man Overboard! Training Video

published on 4 July 2020

Visit https://www.maritimetraining.com to purchase the full-length version. Produced by Maritime Training Services.

0

Article Maritime Pilotage and Sustainable Seaport: A Systematic Review

by Seyed Behbood Issa-Zadeh & Claudia Lizette Garay-Rondero - published on 14 August 2025

Article by Seyed Behbood Issa-Zadeh & Claudia Lizette Garay-Rondero

1

Video ARPA Ground & Sea Stabilisation (Speed over ground & through water) |

published on 11 July 2020

M+ releases it's next interactive video on 'ARPA Ground & Sea Stabilisation; an explanation of 'Speed over ground & Speed through water. Use this video for training crew, enhance safety standards & professional knowledge. Stay tuned for our upcoming series on ECDIS competency, Anchor losses, Incidents, PCS & vetting preparations & Human Elements training. These ‘first of it's kind’ learning videos are based on PSC & vetting observations to provide solutions & enhance your professional...

0

Video Self-driving electric container ship sets sail in Norway

published on 16 August 2022

What’s expected to be the first autonomous container ship is at the beginning of a two-year pilot. Norwegian fertiliser giant Yara is behind the vessel, which will gradually transition to fully autonomous navigation. The global maritime industry is a major emitter of greenhouse gases, and it is thought this could be one step towards a green shipping revolution. Please subscribe HERE http://bit.ly/1rbfUog #ClimateChange #Norway #BBCNews

1

Opinion Online survey: Securing methods of pilot ladders at intermediate length

by Herman Broers - published on 7 December 2020

Recently Capt. Troy Evans did a research into the breaking strength of various securing methods. To quantify the problem of unsafe practices, now is time to have a survey into the number of the various securing methods used worldwide.

0