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

Video S-100 in confined waters: an official IHO testbed and sea trial

published on 27 April 2026

What happens when next-generation maritime data is put to the test in some of the most complex navigational environments? This video shares insights from a major international S-100 simulator trial, delivered in collaboration with Carnival Corporation’s CSMART training facility and a wide network of global partners. Together, we explored how S-100 data sets perform in realistic, high-pressure bridge scenarios—particularly in confined waters where precision and timing are critical. Bringing...

0

Video Successful overtaking of another ship in a canal - Port Revel Shiphandling

published on 10 May 2020

Manoeuvring large ships at close quarters and on shallow water is one of the most difficult aspects of shiphandling because of the complex hydraulic interactions depending on the ships' speeds, on the water depth and on lateral restrictions like in canals. Training is conducted both on meeting and on overtaking ships in shallow waters. This video shows how overtaking in a canal should be conducted: come in close to the stern and then move away from the bow that will be sucked towards your...

0

Article A review of the ship’s pivot point: Science, Maths and Observation’ Where is the centre of a ship’s rotation?

by Tim Cummins, Harbour Pilot, Portsmouth International Port - published on 17 July 2020

This my attempt to do just that. This is a summary of all scientific papers and articles that I could find about the ship’s pivot point. I have added links to any videos associated with the publications and have also included any useful diagrams or equations that the authors published to help explain their research.

0

Article IMPA Information on Pilot Transfer Operations (May 2024)

published on 13 May 2024

This document aims to provide information to pilot organisations and/or competent pilotage authorities on the conduct of pilot transfer operations.

1

Video What is the impact of lateral resistance on a ship's turning circle??

published on 3 September 2020

This video explains the impact of lateral resistance on the turning circle of a vessel using animations. The video explains the term lateral resistance, shows an example of its impact on the turning circle and its associated aspects (advance, transfer, tactical diameter and drift angle).
Contents of this video will benefit mariners preparing for exams (written and oral examinations).

0

Video Interview with Mr. Salducci, President Station de Pilotage de Marseille - Fos

published on 8 December 2021

For this last publication of the week, "In the shoes of a port pilot", the UMF unveils a video of the president of the pilot station, Jean-Philippe Salducci, who talks about his job, his career, the qualities required and the role of the UMF as a major player in the port of Marseille-Fos.

0

Video OXE Marine in Indonesia

published on 13 May 2025

Pilot boat with over 2000 engine hours of operation in tough operating conditions.
OXE Marine brings its high-performance, fuel-efficient diesel outboards to Indonesia, offering a sustainable and reliable solution for commercial marine operations.

0