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 2021 SAFETY4SEA Virtual Forum – DAY 3

published on 1 September 2022

Welcome to the #2021SAFETY4SEA Virtual Forum! On DAY 3 we are navigating through… Forum Agenda 0:00 - Intro 0:06:38 - Panel #7 Ship Safety – Dry Bulk 1:10:38 - PPT: Loss Prevention, Capt. Konstantinos G. Karavasilis 1:23:20 - PPT: Digital Loss Prevention, Capt. Martti Simojoki 1:36:35 - Panel #8 Ship Safety – Tankers 2:38:02 - PPT: Balancing between automation and people: the Future of Maritime Training, Mrs. Joanna Eugenia Bakouni 2:47:16 - PPT: Training & Development: Lessons Learned from...

0

Video Safety of Navigation vs. Commercial Pressure

published on 18 January 2021

Safety of Navigation vs. Commercial Pressure / ROMEILs Tv Commercial Pressures impacts the safety of the vessel, study says Seafarers are pressured to keep quiet and keep the ship moving by ship operators, who dont want to lose inccome. Ship's officers who bring safety issues to the attention of management are exposed to the risk of retaliation. As whistle-blowers they may face punishment, demotion or even termination. International Organization of Masters, Mates & Pilots (MM&P) has...

1

Video Very descriptive: Piston Effect when entering lock.

published on 10 May 2020

Two new locks were introduced in 2009 for training in the new Panama lock conditions with or without tug(s). This video shows the famous "piston effect" when entering the lock at an impressive speed of 10 knots with a high blockage factor.
Port Revel provides shiphandling training using manned models for maritime pilots, masters and officers: http://www.portrevel.com

0

Article GPS (Part 3) - Accidental interferences and intended Interferences by extern technical sytems

by Capt. Gunter Schütze, Thailand/Germany - published on 6 May 2020

The vulnerability of GNSS in shore-based use is definitely different and to be regarded as much more risky than on the high seas.

0

Article What is a Portable Pilot Unit (PPU)?

by TRENZ GmbH - published on 1 April 2024

2

Video Tuban Port Maritime Pilot

published on 8 December 2021

Short story about the transformation of Tuban Pilot into Port Master.
And starting from here, the story about ships, ports & all activities at Tuban Port will begin...

0

Video Pilot Boats in England (1971)

published on 29 August 2020

Location Unspecified Various shots of pilot boat going out to sea from harbour. Boat passes camera and then goes out of shot. Note: No paperwork accompanies this footage FILM ID:3065.08 A VIDEO FROM BRITISH PATHÉ. EXPLORE OUR ONLINE CHANNEL, BRITISH PATHÉ TV. IT'S FULL OF GREAT DOCUMENTARIES, FASCINATING INTERVIEWS, AND CLASSIC MOVIES. http://www.britishpathe.tv/ FOR LICENSING ENQUIRIES VISIT http://www.britishpathe.com/ British Pathé also represents the Reuters historical collection,...

0