Found on YouTube. Created by "Dleep Fotedar". Originally published on 2021-01-29.
Educational and descriptive video Join the conversation...
MH
Mike Harrison
United Kingdom
on 22 September 2023, 11:38 UTC
I'm an Engineer, not a Mariner, but the physics are fascinating and I've experienced bank effects first hand on a number of transits. Closely related issues apply to moored vessel motions caused by passing ships and there are a few great YouTube examples of the initial big surge of a moored vessel, counterintuitively towards approaching passing ship (which can render the spring lines), before the onset of yaw and sway which, more dangerously, can render or break bow/stern lines. Speed, distance, draft, seabed profile and the inclination of approach (i.e. maybe not parallel on river bend berths etc) all play a big part. I've used high end PPUs to monitor and analyse moored vessel movements and the results are fascinating, sometimes alarming as the loads can quickly exceed the winch/bollard/line capacities.
A moored vessel will continue to oscillate for a long time after the other ship passes, which slows/delays cargo transfers, even if the moorings remain intact. Ships get bigger, docks and rivers don't, so clearance and speed are the key controllable factors.
A moored vessel will continue to oscillate for a long time after the other ship passes, which slows/delays cargo transfers, even if the moorings remain intact. Ships get bigger, docks and rivers don't, so clearance and speed are the key controllable factors.
on 4 July 2022, 14:55 UTC
Good representation of the specific aspects. One other aspect that appears to left mute is the fact that it is Speed Through Water that is the important factor. Working as a Pilot in a district where neap tides rates can range between 1.5 to 3.8 knots, and with Spring Tide Rates between 2.6 and 5 knots (subject to location); it is two widely different scenarios going with the tide as apposed to against the tide.
We experience all the aspects frequently within our district.
We experience all the aspects frequently within our district.
on 30 June 2022, 16:53 UTC
This is a very clear and helpful presentation about shallow water effects etc. However, please note that the equation of Bernouilli contains v^2, meaning that all effect are in square when the vessels speed is double. In my opinion this is very important for pilots/captains to understand. Again well done!
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...
Video How port pilot sail out ship from the port? Grimaldi lines catania roro ship
published on 22 April 2022
Video Nederlands Loodswezen: Instruction for Embarking & Debarking
published on 20 October 2021
Video Taiwan’s first female maritime pilot｜Taiwan News
published on 16 July 2024
As Taiwan’s first female maritime pilot, Huang Chao-ling battles wind and waves every day as she guides ships safely into port. Her profession is high-risk and ultra-specialized, requiring years of experience at sea. Huang’s remarkable career is featured in Episode 50 of "The Soul of the Craftsman," a video series produced by the General Association of Chinese Culture. As strong winds blow and the rope ladder sways, maritime pilot Huang Chao-ling clambers up the ship, so that she can guide...
Article Pilots sound alarm on proposed federal right whale rules
by Clay Diamond - Executive Director - General Counsel at American Pilots’ Association - published on 1 August 2024
Video Maritime Pilot - The OOCL Durban ep4
by Captain Ahmed Sati - published on 7 August 2024
Welcome aboard, fellow maritime enthusiasts! Today, we embark on a voyage into the intricate world of ship types. From massive container ships to nimble oil tankers, we'll explore the unique challenges each vessel presents. Whether you're a seasoned sailor or a curious landlubber, our channel will guide you through the fascinating diversity of the ships that navigate our seas. Join us as we delve into the design, function, and complexities of these maritime marvels. Don't forget to like,...
Article London Port Authority: Record year for pilotage
by Port of London Authority - published on 13 January 2022
