Material filmed by divers and robotic cameras accumulated 58 hours for use by accident investigators.
Some felt it wasn’t enough: a tangle of conspiracy theories started from the real, hidden fate of the ship.
Divers have examined the wreck - officially - three times.
Immediately after the accident and then in December 1994. In 1996, the Ministry of the Environment pumped oil from the wreck, and then divers visited the ship.
In recent days, Estonia has again attracted interest from non-authorities.
The Coast Guard is investigating a suspected violation of the grave.
A German ship has been seen on the outskirts of the wreck, with equipment suggesting that the ship has a film crew and a remote-controlled diving robot.
In the video above, see a picture of the Estonian wreck from 1994 taken by divers.
Read more: The ship seen at the Estonian sinking site has been chartered to a TV crew
M / S Estonia sank in an autumn storm on September 28, 1994, south of the island of Utö.
The ship was on its scheduled route from Tallinn to Stockholm.
At about 1:00 in the morning, the ship lost its bow visor and water flooded the car deck.
At 1.15 the ship was heeled and began to sink.
According to the accident investigation report, the ship sank below the surface at 1.40.
In about 25 minutes, the fate of the passengers and the ship's personnel was sealed: the ship took more than 800 people, Swedes, Estonians and Finns.
Survivors were gathered from life - rafts and the sea at just over a hundred ships and helicopters.
Many encountered the end of their journey in the icy ocean.
The surface rescuers who landed from the helicopters at sea were left to pick up corpses from the sea in the morning.
No more live was found.
The fate of the 757 victims was completely obscured.
Of these, 461 were Swedes.
Read more: Altti Hakanpää heard an ominous voice in the middle of the night in Estonia and it made him work - a sight in the ship's karaoke bar still troubles the mind
Read more: 137 was saved from the sinking of Estonia in a stormy sea on September 28, 1994 - read everyone's stories
For the Swedes, Estonia was a shock.
The number of deceased was incomprehensible.
The idea arose in the Swedish government to examine the sunken ship even more closely in order to find out whether the bodies left on the ship could be brought up and, on the other hand, whether the ship could be lifted.
The project was submitted to the Swedish Maritime Administration.
The agency looked for a suitable diving team and ended up using the American company Rockwater A / S, which had experience in difficult conditions on oil rigs, among other things.
Also involved was the Dutch company Smit Tak, which specializes in ship rescue work such as fires and lifting.
The companies joined forces and arrived on the Estonian wreck on December 2, 1994.
The operation was supervised by the Swedish Maritime Administration, the Swedish Police and the Swedish Accident Investigation Board.
In the darkness of December, divers begin their work.
The wreck was first examined externally with robotic cameras.
After that, 12 Americans and Britons dived in four groups of three.
The divers' work was directed from above the deck of the mother ship, to which the video of the camera was transmitted directly.
Men diving into the wreck were thoroughly tested before surgery.
Only those who were not shocked by the coming body, mess, and destruction went down.
The videos of the diving operation ended up in the Swedish police and from there for use by investigators in Finland, among other places.
IS has watched the videos twice at the Accident Investigation Board: in August 2000 and in September 2019. At the top of the videos is a complete mess: broken structures, shattered furniture, drifting bottles and beer cans, toys, sweets ... The conversation between divers and their instructor
A research report was generated from the Rockwater divers operation.
It tells in detail where the divers went, what they saw, where they got in and where they didn’t.
The divers broke the window of the Estonian 4th deck resting on the side of the sea with a hammer and moved into the interior of the ship.
According to the report, decks 4, 5 and 6 were inspected, in addition, the ship's bridge was closely examined.
Apparently divers are looking for a logbook.
The bridge also became the tomb of the ship's captain, mate and chief mate.
The video shows the rudder and controls and various gauges.
The wildest mess is in the tax-free shop and the ship’s restaurants, where tables bolted to the floor hung down.
Divers located - according to the report - 125 deceased.
The research report states that the small number of corpses who hit the divers ’routes indicates that a large number of bodies are behind huge piles of goods.
As the ship swung to its side, all the moving matter moved there.
Roju also blocked cabin doors and cabin corridors.
It would be impossible to get the deceased from there.
Bringing the dead to the surface was seen as a demanding and dangerous project in all respects.
The report also highlighted the amount of scrap and mess only in those areas where divers were allowed to visit.
Much went unexplored.
The report does not favor the search for the deceased or the lifting of the ship, and it practically concluded the discussion on both possibilities.
Or so you might have thought.
Although the official accident report identified the failure of the bow visor as the cause of the sinking, rumors galloped wild.
In conspiracy theories, the ship was carrying something secret, the removal of which allowed water to enter the ship.
A hole was seen on the side that was thought to be the cause of the explosion.
Hurj's vision was that it was a conspiracy between Finland, Sweden and Estonia, to which the sinking or immersion of Estonia was somehow connected.
And that’s not all: in Estonia, there would have been a truck loaded with drugs that was pushed into the sea.
Therefore, the bow visor was opened and the water flooded in.
There was also talk of illegal immigrants.
A dive report by Rockwater was criticized for its superficiality and the fact that not all of the strips were brought in for examination.
The reviews wondered why the car deck was not visited at all, even if it had been reached.
If the 2001 attacks on the World Trade Center were considered by some enthusiasts to be a conspiracy, so was Estonia.
The Bomb on a Ship explanation was tenacious, even so tenacious, that in 2000, American millionaire Gregg Bemis began his own dives into the wreck in search of evidence.
German journalist and producer Jutta Rabe joined, who went to harden Kari Lehtola, the then Finnish member of the Estonian Research Commission, about “contradictions”.
Bemis ’dives led nowhere because there was no going inside.
Still, the Bemis report finds discrepancies in the Rockwater material, and it was concluded that the 1994 dive videos have been tampered with.
Rabe came up with the book and film The Riddle of the Baltic Sea (2004), which was to tell the truth about Estonia through film narration.
The film, which mixes fiction and fact, tells the story of a tenacious television reporter who gets a hint of obscure arms deals in Estonia from a former Stasi agent of the GDR's secret police even before the accident.
Estonia was sunk by a nationalist group of former Soviet KGB agents who wanted to prevent Russian weapons technology from ending up in the West.
The film suggests that the conspiracy of Finland, Sweden and Estonia would be related to this, and therefore the research results would have been distorted.
Estonia has also been tried in France.
In July, the court dismissed claims of € 40 million from relatives of victims and survivors from the shipbuilder Meyer Shipyard and Bureau Veritas, which gave the ship a rating.
Read more: The lawsuit of the relatives of the Estonian victims fell - the saved Finn: “This matter should have been dealt with 20 years ago”
The Estonian wreck has been pacified by a 1995 law.
The law is based on an agreement made by Finland, Sweden and Estonia in the same year.
Pictures from the Accident Investigation Board tell a gloomy story from more than 50 depths.
Under the agreement, the wreck of Estonia and the surrounding area will be considered the victims' last resting place.
The law prohibits diving at the ship's sinking site, as well as other activities aimed at lifting bodies or objects from the wreck or from the seabed.
In recent years, it has been mostly quiet around Estonia.
Hundreds of the dead in the most devastating shipwreck in peacetime in the Baltic Sea are allowed to rest in peace.
Photographer Peter Jansson was filming rescue work after the sinking of Estonia.
Watch the video below.