Video

Interaction Bank Effect


published on 30 June 2022 1021 -

Found on YouTube. Created by "Dleep Fotedar". Originally published on 2021-01-29.
Educational and descriptive video

Join the conversation...

Login or register to write comments and join the discussion!
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.
0

Mr. Frikkie Viljoen ABP - Humber Estuary Services, United Kingdom
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.
1

Captain Robert de Roos Loodswezen Rotterdam - Rijnmond, Netherlands
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!
2

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 #DangerousLadders on Facebook

by Marine-Pilots.com - published on 10 September 2019

A valuable campaign managed by Chris Young, Kevin Vallance and others, which we found on Facebook .

1

Video Setubal Pilot Station to Eco Oil Jetty

published on 6 October 2020

Ship receiving pilot at the pilot station and proceeding to jetty.

2

Video Humber Marine Pilots by Correspondent Sarah Corker

published on 10 September 2020

For as long as ships have been sailing the seas, there have been maritime pilots to guide them through the most dangerous waterways. But there is a worldwide shortage of seafarers and the industry is struggling to attract young people into the profession. Our Business Correspondent Sarah Corker has been given rare access to film with pilots on the Humber Estuary who work 365 days a year, whatever the weather. And a warning, Sarah’s report may make you feel sea sick.

1

Video Marine Pilots at Port Authority of New South Wales, Australia

by Port Authority New South Wales - published on 8 September 2022

"Keeping the ports of NSW open to the world" - Watch how the teams at Port Authority of New South Wales work on the water 24/7 to keep our ports safe, secure and open to the world.

1

Opinion A year ago, pilot Capt. Dennis Sherwood died in the line of duty

by Frank Diegel - published on 30 December 2020

It has been exactly one year ago that a pilot from Sandy Hook (New York), Dennis Sherwood, died in the line of duty while attempting to board the container vessel Maersk Kensington.
What has happened since then? Has safety been improved for the pilots?

1

Video Pilot Boat "AHTO 24" from Tallinn (Estonia, EU)

published on 4 October 2022

Great pictures from Estonia

1

Video Harbor Pilots SRL Career Day

published on 31 January 2021

Captain Bronson Stubbs discusses what harbor pilots do

0