The MS Estonia sank on Wednesday, September 28, 1994, between about 12:50 and 1:50as the ship was crossing the Baltic Sea, route from Tallinn, Estonia, to Stockholm, Sweden. The sinking was one of the worst maritime disasters of the 20th century. It is one of the deadliest peacetime sinkings of a European ship, after the RMS Titanic in 1912 and the RMS Empress Ireland in 1914, and the deadliest peacetime shipwreck to have occurred in European waters, with 852 lives lost.
Sinking[]
MS Estonia departed slightly behind schedule at 19:15 on 27 September and was expected in Stockholm the next morning at about 09:00. She was carrying 989 people: 803 passengers and 186 crew. Most of the passengers were Swedish, although some were of Estonian origin, while most of the crew members were Estonian. The ship was fully loaded, and was listing slightly to starboard (to the right looking from the ship in the direction of its travel) because of poor cargo distribution.
According to the final disaster report, the weather was rough, with a wind of 15 to 20 m/s (29 to 39 kn; 34 to 45 mph), force 7–8 on the Beaufort scale and a significant wave height of 4 to 6 m (13 to 20 ft) compared with the highest measured significant wave height in the Baltic Sea of 7.7 m (25 ft 3 in). Esa Mäkelä, the captain of Silja Europa who was appointed on-scene commander for the subsequent rescue effort, described the weather as "normally bad", or like a typical autumn storm in the Baltic Sea. According to modelled satellite data, gusts were in the excess of 85–100 km/h (24–28 m/s) at 01:00 that night over the Baltic Sea, although the ship had not yet reached the areas with the heaviest gusts before its sinking. There was some rain and temperatures around 10 °C (50 °F). All scheduled passenger ferries were at sea, something not unusual for this weather in the Baltic Sea. The official report says that while the exact speed at the time of the accident is not known, Estonia had very regular voyage times, averaging 16 to 17 kn (30 to 31 km/h). The chief mate of the Viking Line cruiseferry Mariella tracked Estonia's speed by radar at approximately 14.2 kn (26.3 km/h) before the first signs of distress, while the Silja Europa's officers estimated her speed at 14 to 15 kn (26 to 28 km/h) at midnight.
The first sign of trouble aboard Estonia was when a metallic bang was heard, presumably caused by a heavy wave hitting the bow doors around 01:00, when the ship was on the outskirts of the Turku archipelago, but an inspection—limited to checking the indicator lights for the ramp and visor—showed no problems. Over the next 10 minutes, similar noises were reported by passengers and other crew. At about 01:15, the visor is believed to have separated and torn open the loading ramp behind it. The ship immediately took on a heavy starboard list (initially around 15 degrees, but by 01:30, the ship had rolled 60 degrees and by 01:50 the list was 90 degrees) as water flooded into the vehicle deck. Estonia was turned to port and slowed before her four engines cut out completely.
At about 01:20, a quiet female voice called "Häire, häire, laeval on häire", Estonian for "Alarm, alarm, there is alarm on the ship", over the public address system, which was followed immediately by an internal alarm for the crew, then one minute later by the general emergency signal. The vessel's rapid list and the flooding prevented many people in the cabins from ascending to the boat deck, as water not only flooded the vessel via the car deck, but also through windows in cabins as well as the massive windows along deck 6. The windows gave way to the powerful waves as the ship listed and the sea reached the upper decks. Survivors reported that water flowed down from ceiling panels, stairwells and along corridors from decks that were not yet under water. This contributed to the rapid sinking. A mayday was communicated by the ship's crew at 01:22, but did not follow international formats. Estonia directed a call to Silja Europa and only after making contact with her did the radio operator utter the word "Mayday". The radio operator on Silja Europa, chief mate Teijo Seppelin, replied in English: "Estonia, are you calling mayday?" After that, the voice of third mate Andres Tammes took over on Estonia and the conversation shifted to Finnish.
Tammes was able to provide some details about their situation but, due to a loss of power, he could not give their position, which delayed rescue operations somewhat. Tammes would later die in the sinking. Some minutes later, power returned (or somebody on the bridge managed to lower him or herself to the starboard side of the bridge to check the marine GPS, which will display the ship's position even in blackout conditions), and the Estonia was able to radio its position to Silja Europa and Mariella. The ship disappeared from the radar screens of other ships at around 01:50
Aftermath[]
The wreck was examined and videotaped by remotely operated underwater vehicles and by divers from a Norwegian company, Rockwater A/S, contracted for the investigation work. The official report indicated that the locks on the bow door had failed from the strain of the waves and the door had separated from the rest of the vessel, pulling the ramp behind it ajar. The bow visor and ramp had been torn off at points that would not trigger an "open" or "unlatched" warning on the bridge, as is the case in normal operation or failure of the latches. The bridge was also situated too far back on the ferry for the visor to be seen from there. While there was video monitoring of the inner ramp, the monitor on the bridge was not visible from the conning station. The bow visor was under-designed, as the ship's manufacturing and approval processes did not consider the visor and its attachments as critical items regarding ship safety. The first metallic bang was believed to have been the sound of the visor's lower locking mechanism failing, and that the subsequent noises would have been from the visor 'flapping' against the hull as the other locks failed, before tearing free and exposing the bow ramp. The subsequent failure of the bow ramp allowed water into the vehicle deck, which was identified as the main cause of the capsizing and sinking: RORO ferries with their wide vehicle decks are particularly vulnerable to capsizing if the vehicle deck is even slightly flooded because of free surface effect: the fluid's swirling motion across such a large area hampers the boat's ability to right itself after rolling with a wave. The same effect had caused the capsizing of MS Herald of Free Enterprise seven years earlier.
The report was critical of the crew's actions, particularly for failing to reduce speed before investigating the noises emanating from the bow, and for being unaware that the list was being caused by water entering the vehicle deck. There were also general criticisms of the delays in sounding the alarm, the passivity of the crew, and the lack of guidance from the bridge.
Recommendations for modifications to be applied to similar ships included separation of the condition sensors from the latch and hinge mechanisms.
Wreck[]
MS Estonia Wreck
In the aftermath of the disaster, many relatives of the deceased demanded that their loved ones be raised from international waters and given a land burial. Demands were also made that the entire ship be raised so that the cause of the disaster could be discovered by detailed inspection. Citing the practical difficulties and the moral implications of raising decaying bodies from the sea floor (the majority of the bodies were never recovered), and fearing the financial burden of lifting the entire hull to the surface and the salvage operation, the Swedish government suggested burying the whole ship in situ with a shell of concrete.
As a preliminary step, thousands of tons of pebbles were dropped on the site. The Estonia Agreement 1995, a treaty among Sweden, Finland, Estonia, Latvia, Poland, Denmark, Russia and the United Kingdom, declared sanctity over the site, prohibiting their citizens from even approaching the wreck. The treaty is, however, only binding for citizens of the countries that are signatories. At least twice, the Swedish Navy has discovered diving operations at the wreck. The wreck's location is monitored on radar by the Finnish Navy.