How does a tanker run aground on a reef

dom

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......We are left with what seems much the most probable explanation - loss of situational awareness by the Officer of the Watch. The coast line appears low lying so there would be few visual indicators of position, and the coast line would not return a good radar echo. GPS would operate normally, though.

At this point a question occurs - did the ship download the dongle for the largest scale charts for the area of the Mauritius coast that she was planning to close? If we assume that the ship was closing the coast to get a cellphone signal - something that is very commonly done, but not usually with the owners’ or managers’ approval - then the cost of the large scale BA charts for somewhere where the ship wasn’t meant to be would show up in the ship’s accounts and the superintendent might have had a small sense of humour failure. (The charts are pre-loaded; you buy the dongle for each chart and download that over satellite).

Just possibly, the 2/O might have decided not to spend the money, but to rely on the large scale charts. I don’t know this - I am speculating....


Top marks for the this post. It reads like a combined whodunit and well written MAIB report - really sucks one in (y):)

While obviously speculation, the cellphone theory is intriguing !
 

dunedin

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I know just enough about how charts and scaling works to know how little I know, but it does seem to me that it shouldn't be beyond the realms of possibility to design charts to show all depths less than, say, 20m, at all scales, even if we show a 20m reef as a mile wide at the smallest scale, getting more accurate as you zoom in. Can anyone with real knowledge tell me why this can't be done? Sure there's a cost implication, but the cost of putting a ship on unmarked rocks seems to me to have certain cost implications too.

That’s what I don’t understand, particularly when the regular rant about zoom levels comes up again..

An electronic chart is just a digital dataset. How it is presented is decide by the plotter software. SURELY the only safe software design choice should be to represent any area by its shallowest depth within the area, whatever the zoom. Thus as you say if a small area of shallow/ awash reef in a chart area, colour/mark that whole area in that danger colour/ depth.
It does seem that digital plotter software has some serious design errors. And it sounds like this includes the big ship software.
 

Kukri

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Don't most vessels nowadays have satcoms thereby negating the need to close the shore to get a wifi signal?

$$$$!!!!

Some shipowners allow their crews limited use of the satcom, usually for text messages, but seldom for phone calls. Very few have crew wifi. Traffic over geostationary satellites is fearsomely expensive.
 

tillergirl

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Press reports:

A magistrate will preside over the Court of Investigation that will be set up to investigate the grounding of the MV Wakashio on the reefs of Pointe D’Esny. Information provided by Attorney General Maneesh Gobin during a press conference this afternoon, Tuesday, August 25, at the Prime Minister’s Office.

"Consultations are underway to appoint the judicial officer," said the Attorney General. Speaking to the press, he argued that the police and the judiciary should be allowed to do their job, deploring the incidents at the Mahebourg court. “There are several ongoing police investigations. Our occupation is to shed light on this matter. "

Regarding claims to the insurer, the Minister specified that the State will call on two experts to assess the impact of the Oil Spill, which will take into account the environmental aspects and social. "The government intends to retain the best," he added"

*******

As of yesterday afternoon, the post-oil spill operation in the south-east saw the collection of 1,122 tonnes of liquid waste and 792 tonnes of contaminated waste at sea and on shore

Yesterday afternoon, at 3.30 p.m., the first part of the scuttling of the MV Wakashio, a bulk carrier 300 meters long and 50 meters wide, flying the Panamanian flag, was completed off the east coast of Mauritius. Indeed, a press release issued by the National Oil Spill Coordinating Committee indicates that the bow of the Japanese bulk carrier is no longer visible on the ocean surface, without giving details of the coordinates of this operation.
The only indication is that this part of the wreck will have to end up some 3,180 meters deep in the Indian Ocean. At the same time, the post-oil spill clean-up phase in the south-eastern region has started a new phase since the beginning of this week.

This scuttling operation had been engaged since last Wednesday with the front of the bulk carrier being pulled by two tugs to be placed in the open ocean. Faced with the opposition expressed, the Mauritian side maintained that this plan had been endorsed by foreign and local experts in the field, including the three specialists dispatched by France on this occasion ... On the other hand, since the beginning of the week, the operation of pumping fuel on the part of the MV Wakashio, still drossed on the reefs of Pointe-d'Esny, was completed, at the same time reducing the risks of a second wave of marine pollution. “There is no more diesel oil on the aft (back) section of the casualty. A considerable amount of pollutants and other floating items have been further removed and this exercise is ongoing ”, officially notes the press release.

With an ongoing tender exercise, the stern of the bulk carrier, representing some 8,000 tonnes of scrap, will need to be cut up and dismantled.
The National Oil Spill Coordinating Committee has given the Salvage Masters a deadline until November 1, before the next hurricane season, to complete this part of the “salvage operation”.
After the initial effort to clean up the lagoon and the shore, mainly carried out by volunteers, the insurers of MV Wakashio appointed two companies, Le Floch Depollution and Polyeco SA, to take charge of this reorganization of the marine environment. The coordination committee notes that the removal of the artisanal “booms”, placed in the lagoon to avoid a clear deterioration of the oil spill, is currently being done at an accelerated rate with the deployment of around ten boats and one. about forty additional fishermen.

On the other hand, one kilometer “absorb booms” have been installed at the Mahébourg Waterfront with the cleaning of the shoreline continuing. “The strategy for redeployment of booms is still under consideration with the consultation of local stakeholders and foreign experts”, we officially understand.

The Solid Waste Management Division of the Department of the Environment has developed a work schedule in collaboration with the International Tanker Owners Pollution Federation, an organization that provides advice on oil spill response. The action plan for the clean-up of the disaster area in the south-east of Mauritius includes two clusters with a geographical demarcation under the responsibility of Le Floch and Polyeco.

As of yesterday afternoon, 1,122 tonnes of “liquid waste” and 792 tonnes of contaminated waste had been removed. The statement from the National Oil Spill Coordination Committee, which also reports on daily air quality analyzes, notes: "Test results have not revealed any Volatile Organic Compound (VOC) or petroleum odor at five schools and three residential areas . However, mild petroleum odor has been observed at Mahebourg Waterfront. "And to add:" The analysis of sea water for oil and grease contents on the shoreline at 27 sites has shown no abnormality except at two sites, namely, Grand River South East (pH content) and Grand Port (oil and grease content ). "
 

Frogmogman

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I don't know if you chaps are aware of the latest development. A tug involved in the clean up, the Sir Gaetan Duval has been lost, with two crew members dead and two missing. The Tug was towing an empty barge, which had been on standby in case of further leaks from he wreck of the Wakashio. It sounds like the barge collided with the tug in quite heavy seas, leading to it's loss.

Two dead, two missing in Mauritius tugboat sinking - Marine Log
 
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