Video

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

published on 7 April 2021 - 254 -

Show comment section |

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

ISSIMS GmbH
Innovative Ship Simulation And Maritime Systems

Education

Join the conversation...

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!!

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...

Video Critical Ship navigation done with perfection

published on 31 January 2022

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

Video SAMMON Demo Planning FtLauderdale Arrival with comments

published on 20 January 2021

This updated video shows how easy it is to develop an arrival plan with the SAMMON Planning Tool. As a sample the arrival from appraoch until the berth to Ft. Lauderdale is used under strong current of 2kn. At the simulator training courses where we used this tool for preparation of a manoeuvring plan during the briefing sessions all nautical officers involved stated afterwards: "Why don't we have this tool on our ships?"

Video Hugues Cauvier: Understanding the ship's pivot point (complete video)

by Capt. Hugues Cauvier - published on 3 September 2024

This video has been recut and edited by the creator Hugues Cauvier. Previously there were three episodes, which have now been combined into one.

Video Fathom Safety (UK): New Online Pilot Ladder Training

published on 13 February 2024

Fathom Safety now offers an online course on Pilot Ladder Training

Video Maritime Pilot Training VI - Pilot Ladder Training

published on 12 May 2021

Training video VI on the correct use of the pilot ladder

Video AMPI Marine Pilot Profiles Webinar - November 2021

published on 16 November 2021

Thanks to Jacqui Kenyon, Chevi King and Kate Delisky for joining Jeanine Drummond on this webinar to discuss their careers and pathways into marine pilotage. The audience was a great mix of experienced marine pilots and newer maritime industry participants, as well as school aged children, with people joining us from Australia and overseas. It was an opportunity to create greater awareness of the maritime industry, and the important role marine pilotage plays in protecting our port...

Video Pilot on Board Trailer (Finnpilots)

published on 4 July 2019

Finnish Pilots at work.

Video History: Lightship (1950)

published on 18 May 2020

Goodwin Sands, Kent. M/S bows of Trinity House ship "Ready". L/S "Tongue" lightship at sunset. Panning M/S from side to front of service ship (deck level). M/S lightship. M/S bridge of service ship, lightship passes. L/S two ships, pan to lightship. C/U ship's telegraph coming to "stop". M/S seaman pulls fresh water hose to lightship. L/S deck of service ship, general activity. C/U provisions waiting to be transported to lightship. M/S men passing food between ships. L/S side of...