Аппараты глубоководного погружения "Мир": история и конструкция

Self propelled deep submergence vehicle

Mir (Мир) was a class of two self propelled deep submergence vehicles. The project was initially developed by the USSR Academy of Sciences (now the Russian Academy of Sciences) along with Lazurit Central Design Bureau, and two vehicles were ordered from Finland. The Mir 1 and Mir 2, delivered in 1987, were designed and built by the Finnish company Rauma Repola's Oceanics subsidiary. The project was carried out under the supervision of constructors and engineers of the Shirshov Institute of Oceanology.

The vessels are designed to be used for scientific research. They might also be used to assist in submarine rescue operations, although they do not have the capacity to take anybody aboard when underwater. The carrier and command centre of both Mir submersibles is the R/V Akademik Mstislav Keldysh. The two Mir units are operated by the Russian Academy of Sciences. Their military counterparts are the Konsul class submersibles. The Mir submersibles can dive to a maximum depth of 6,000 metres (19,685 ft). Traditionally, the personnel sphere of a deep sea submersible is manufactured of titanium plates that are welded together. On Mir, the personnel sphere is made of a maraging steel alloy that has ten percent better strength/weight ratio than titanium. This alloy contains about 30% cobalt and smaller amounts of nickel, chrome and titanium. Two hemispheres were made by casting and machining, and then bolted together, thus avoiding welded joints. The resulting construction is close to the density of water, thus making it easier to move in different depths. Additional buoyancy is provided by of syntactic foam.

Production of the two Mir units was a prime example of Finnish Soviet economic and technical co operation during the Cold War. The technical specification for the creation of the devices was prepared by the head of the Department of Deep sea Habitable Vehicles of the Institute of Oceanology of the USSR Academy of Sciences, project manager Igor Mikhaltsev. The main ideas on the design of the submarines, the arrangement of its individual systems, nodes, elements, and the acquisition of scientific and navigation equipment belong to I. E. Mikhaltsev, his deputy A. M. Sagalevich and the chief engineer of the project from the Finnish shipbuilding company Sauli Ruohonen, who headed a group of Finnish engineers and technicians who participated in the construction of the submarines. Bids from Canada, France and Sweden to construct the submarines had been retracted most likely due to political pressure. In a later interview with STT the then Rauma Repola department head Peter Laxell said he believed that "Finland got the permit to deliver the crafts to the Soviets on the basis that the CoCom officials in the USA believed the project would be a failure  Once it became clear to them we actually had accomplished the engineering feat there was a huge uproar about how such technology could be sold to the Soviets, enough for many visits to the Pentagon." Because of the CoCom restrictions, most of the technology used had to be developed in Finland. The electronics was developed by Hollming. The syntactic foam was produced in Finland by Exel Oyj, as 3M, the leading producer, refused to supply their product.

In 1998 the Mirs were utilized in the filming and photography of the sunken Japanese submarine I 52 for a National Geographic television special and a magazine article. Aboard the Russian R/V Keldysh for over five weeks in the mid Atlantic, the film crew documented the search by treasure seeker Paul Tidwell for the alleged two tons of gold that was on the I 52 cargo manifest. Director of photography William Mills and National Geographic photographer Jonathan Blair made multiple dives in Mir 1 and Mir 2 alongside their Russian pilots Anatoly Sagalevich in Mir 1 and Yevgeny Chernyaev in Mir 2, to a depth of 5240 metres, a mile and a half deeper than the Titanic wreck. Although no gold was ever recovered, the expedition was documented in a National Geographic television special, Search for the Submarine I 52. The earlier discovery of the wreck was made possible through the work of Tom Detweller and David W. Jourdan and their team at Nauticos, LLC. Mills would join the Nauticos team in 2001 in their ongoing efforts to locate Amelia Earhart's Lockheed L10 E aircraft in the Pacific.

In the mid 1990s and early 2000s, the Mir vehicles were used by Canadian film director James Cameron to film the wreck of the RMS Titanic, resting at a depth of 3,821 metres, for his 1997 film Titanic and documentaries such as Ghosts of the Abyss, and to film the wreck of the German battleship Bismarck, resting at a depth of 4,700 metres, for his 2002 documentary film Expedition: Bismarck.

In 2000 RMS Titanic Inc. co founder G. Michael Harris served as expedition leader. He conducted over 120 hours on the wreck of the Titanic and made eleven dives in the expedition, utilizing both Mir 1 and Mir 2. Record of this expedition was made by artist Roger Bansemer in his book Journey to Titanic. Artifacts gathered from this exhibition are on display at Titanic: The Artifact Exhibition in Orlando, Florida, the largest Titanic exhibition in the world.

In 2005 an unnamed expedition to the Titanic was made. The expedition is documented in an hour and fourteen minute video by artist Roger Bansemer. The expedition left from St. John's, Newfoundland aboard the Keldysh. On June 12, 2017, a part of the expedition aired on PBS series Painting and Travel with Roger and Sarah Bansemer in episode 12, Journey to Titanic.

On August 2, 2007, Russia used the Mir submersibles to perform the first manned descent to the seabed under the Geographic North Pole, to a depth of 4,261 m, to scientifically research the region in relation to the 2001 Russian territorial claim. The Mir 1 crew: pilot Anatoly Sagalevich; polar explorer Arthur Chilingarov; and Vladimir Gruzdev. The Mir 2 crew were international: Russian pilot Yevgeny Chernyaev; Australian Mike McDowell; Swede Frederik Paulsen. On the seabed Mir 1 planted a one metre tall rustproof flag of Russia, made of titanium alloy at OKB "Fakel" in Kaliningrad, and left a time capsule, containing a message for future generations and a flag of United Russia. "If a hundred or a thousand years from now someone goes down to where we were, they will see the Russian flag there", said Chilingarov Soil and water samples of the seabed were taken during the mission.

In July 2008 both Mir submersibles began a two year expedition to Lake Baikal, the world's largest freshwater lake. The expedition is being led by the Russian Academy of Sciences. The group's mission chief said that a total of 60 dives were planned. On July 29, the Mir 1 and Mir 2 submersibles reached the bottom of Lake Baikal, making the 1.05 mile (2 km) descent.

In 2011, both submersibles were part of a scientific exploration program in Lake Geneva called elemo (exploration des eaux lémaniques), in which researchers conducted studies in areas such as bacteriology and micropollutants, as well as exploring Lake Geneva's geology and physics. The submersibles arrived on Lake Geneva in May 2011.

The Mir 1 is currently on display at the Музей Мирового океана in Kaliningrad and the Mir 2 at the Atlantic Division of Shirshov Institute of Oceanology in Kaliningrad, from where, upon completion of the new building of the Institute of Oceanology at Nakhimovsky Prospekt in Moscow, it will be moved to the museum of the Institute to be established there.