What does it take to get rid of the container ships on the Suez Canal?


by

Suez Canal Authority

In 2021 March 23, in the Egypt of the Suez Canal is a strategic point of sea transport, the container ship 'Ever Given' is agroundaccident occurred . A situation that is not the prospect of recovery is standing also followed in the article created when more than 5 days after the grounding has elapsed. Experts explain what you need to do to solve this problem, which has a huge impact on shipping and trade.

Suez Canal blockage: what it takes to unwedge a megaship
https://theconversation.com/suez-canal-blockage-what-it-takes-to-unwedge-a-megaship-158006

What will it take to get a giant cargo ship unstuck from the Suez Canal? | Ars Technica
https://arstechnica.com/gadgets/2021/03/what-will-it-take-to-get-a-giant-cargo-ship-unstuck-from-the-suez-canal/

On March 23, the container ship 'Ever Given' owned by Japanese shipping company Shoei Kisen and operated by Taiwanese shipping company Evergreen Marine ran aground on the Suez Canal. The accident has caused more than 320 vessels to get stuck , and the damage is estimated to amount to 43.6 billion yen per hour.

If you watch the following movie posted on the online bulletin board Reddit, you can see that many huge container ships have stopped and are waiting for the opening of the Suez Canal.

Ships waiting for the Suez Canal to open from r / Damnthatsinteresting



According to Mr. Stephen Tanokku who studies the Maritime fluid mechanics in the United Kingdom, University of Southampton, the same size of container ships and Ever Given also in 2016 'CSCL Indian Ocean' has run aground in the river Elbe in Germany case there is a And that. There are two main ways to recover from such a grounding accident.

◆ 1: Mobilization of the tugboat fleet
A tugboat is a vessel equipped with a powerful engine to assist other vessels in berthing or leaving the shore. The Suez Canal Authority in Egypt has already attempted to tow Ever Given with eight large tugs, but it was unsuccessful at the time of writing. This is believed to be hampered by the lack of buoyancy of Ever Given.

Therefore, at the accident site, attempts to improve the buoyancy of Ever Given are given top priority by dredging work to excavate the riverbank with heavy machinery.


by Suez Canal Authority

The most common way to improve the buoyancy of a ship is to lower the load and lighten the hull. Crane vessels may be used to unload Evergiven cargo, as the banks of the Suez Canal are sandy and difficult to access onboard containers from land.

In addition, buoyancy is secured by arranging a refueling ship sideways to drain the fuel of Ever Given, by discharging ballast water to reduce the weight of the hull, and by installing an air bag under the waterline. However, Mr. Turnock thinks that it will be possible to tow with a tugboat.

◆ 2: Spring tide
In the case of 'CSCL Indian Ocean' mentioned above, 12 tugboats and 2 dredgers were mobilized, and the ' spring tide ' arrived at the right time, so the accident was restored on the 6th day. The spring tide, tidal range by attraction of the sun and the moon, which was in line come together is the largest tide (tide) things. On the Suez Canal, the days after March 27 are said to be just the time of spring tide.



The Suez Canal is said to be less affected by the ebb and flow of the tide than the coast, but even so, the arrival of the spring tide, when the water level in the canal rises considerably, does not allow the hull to rise significantly. It is expected. As a result, Turnock said, 'Ever-Given grounding accidents are different from normal salvage, and it is difficult to predict how quickly a combination of different attempts will be achieved. The salvage crew is trying to resurface Ever Given, so it's likely that the ship will open in the next few days. '

On the other hand, deals with logistics management services Transporeon of Clemens Shapera's is high, 'most likely, is the re-floating of 28 days or 29 days. However, it is also realistic because in the worst case can not move anything weeks It is possible, 'he said, saying that the problem could be prolonged.

According to the site 'Is that ship still stuck? ', Which allows you to grasp the pattern of the grounding accident in real time, Ever Given is still grounding at the time of writing the article.

'Is that ship still stuck?', A site that allows you to grasp the status of container ships stuck in the Suez Canal in real time, has appeared --GIGAZINE


by NOAA's National Ocean Service

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