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
Opinion Piloting, Autonomous Vessels, AI, and the coffee making machine
by Captain Ricardo Caballero "Themaritimepilot" - published on 15 June 2020
I am not a computer savvy. My knowledge in programming and robotics and those sort of things is nil. I get lost in the sea of social media and easily entangle myself in the web. All I have done for the last 25 years or so is to pilot ships through the Panama Canal. However, during the last couple of years I have done my best to catch up with technology, since it has enhanced our possibilities and improved safety in our field. But still, I have to admit that I am way behind the new guys in this important issue.
Video EfficientFlow - STM in ports and narrow waters
published on 22 September 2020
Improved traffic flow converts waiting times into increased safety and bunker savings for large ships in the narrow Swedish and Finnish archipelagos.
Found on YouTube. Created by "Sjöfartsverket".
In the STM EfficientFlow project, the Baltic ports of Rauma and Gävle implement efficient port calls using real-time information. Improved traffic flow converts waiting times into increased safety and bunker savings for large ships in the narrow Swedish and Finnish archipelagos.
Video Crossing The Suez Canal
published on 15 March 2022
Video A Journey on Kiel Canal, Germany
published on 25 September 2022
Article Human Error in Pilotage Operations
published on 3 December 2024
Video Tanker contacted embankment in Hamburg, seriously damaged
published on 7 December 2020
Product tanker NORTHSEA RATIONAL in load contacted embankment in Neumuelen, Hamburg, in the morning Nov 25, while maneuvering to berth, according to FleetMon.
It stated: “Tanker sustained serious damages to starboard bow, cause of accident yet unknown.
“She was berthed after accident, and as of evening Nov 25, remained, berthed. There was no hull breach in cargo tanks area, no cargo loss reported.”
