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 Pilotage with PPU (Portable Pilot Unit) - Indonesia
published on 16 December 2021
Video Documentation 'Marine Pilots' from Port Botany, Sydney (2018)
published on 10 September 2020
Video Captain David Gelinas presents Penobscot Bay Piloting
published on 8 March 2022
Recorded from a live Zoom program on January 27th, 2022 Captain David Gelinas will discuss Maine's State Pilotage System and how it is practiced on Penobscot Bay. The talk will cover State Law requirements for foreign flag ships, the role of the State Pilot, Training, and local practices. Check out more videos from the Penobscot Bay & River Pilots Association here: https://www.penbaypilots.com/video-gallery/ Captain Gelinas has been a State Pilot for Penobscot Bay and River since 1992. He...
Video Different methods of steering, navigating and maneuvering the Celebrity Edge
published on 3 January 2022
HOW WE DRIVE- Different methods of steering, navigating and maneuvering the Celebrity Edge, a 130,818 gross ton, 306 meter, $1.2 billion dollar new luxury liner. When we’re underway and I walk around the ship and guest's see the Captain, the question I get asked ALL. THE. TIME is “If you’re here, who is driving the ship”. The answer is the Officer of the Watch. We have a minimum of 3 very qualified and licensed officers manning the bridge at ALL times. 3 separate teams rotate every 4...
Video Singapore Bunker Tanker Loading at Universal Terminal..
published on 6 September 2021
Video Aberdeen Harbour - Meet Finn Froekjaer-Jensen, Pilot
published on 26 August 2020
