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 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...
Video Welcome to Lyttelton Port Company
published on 27 August 2025
Lyttelton is the largest port in the South Island of New Zealand. We are the gateway for the goods that keep our region moving. From the Container Terminal to the Dry Dock, and inland to CityDepot and MidlandPort, LPC offers a wide range of facilities and services Our Vision is to be New Zealand’s most sustainable and innovative maritime gateway, enriching our communities and driving economic prosperity. Our Purpose is to facilitate growth of trade for Christchurch, Canterbury and the wider...
Video How Tugboats Keep Ports Running Smoothly
published on 13 January 2025
"The Hidden Heroes: How Tugboats Keep Ports Running Smoothly"Did you know that tugboats are the unsung heroes of our ports? They work tirelessly behind the scenes to ensure the safe and efficient movement of giant ships and cargo vessels. From navigating treacherous waters to providing emergency assistance, tugboats play a vital role in keeping our global supply chain running smoothly. In this video, we're shining the spotlight on these mighty machines and the brave men and women who...
Article IMPA Safety Campaign Analysis 2016-2020
by Herman Broers - published on 6 January 2021
Article "SAFE Passage" Journal by Australasian Marine Pilots Institute
by Frank Diegel - published on 10 March 2021
Video CIOplus 2018
published on 2 September 2019
ChartWorld's Information Overlay+ service, CIO,+ builds on the success of our automated T&P NtM service launched last year. Additional features include safety and environmental overlays. CIO+ is the only service in the market which solves the problem of plotting missing T&P NMs into the ECDIS. CIO+ means that the T&P NM is already applied in a simple updated Chart
