Posted on 09/10/2001 3:28:36 AM PDT by Movemout
The New York Times
Sunday, September 9, 2001
ST. PETERSBURG, Russia -- For nearly 400 days since two mysterious torpedo room explosions ripped open the nuclear submarine Kursk, causing the deaths of all 118 Russian crewmen, the 505-foot vessel has been nestling into the sediments on the bottom of the Barents Sea.
Periodically, Russian warships on guard above the wreck have thrown hand grenades into the water, to ward off any prying foreign submarines that might be interested in scavenging the Kursk's weapons, codes or electronics.
Now, a fleet of high-tech salvage vessels is taking over from the warships. If all goes according to plan -- and little has so far -- a Dutch lifting barge called the Giant 4, tethered by eight anchor lines, will raise the Kursk from the seabed this month using 26 computer-controlled hydraulic jacks in an operation that, its designers say, can be accomplished in 12 to 16 hours.
But the raising of the Kursk, one of the largest and most complex salvages ever attempted, invites dangers such as disturbing the Kursk's twin nuclear reactors and jostling its lethal payload of unexploded torpedoes and 22 supersonic cruise missiles, still snug in their 30-foot launching canisters. Each carries a warhead packed with nearly 1,000 pounds of high explosives.
Russian officials say the risks are outweighed by their duty to the perished crew as well as the Arctic environment. In November, during the first examination of the interior of the submarine by Russian divers since the Aug. 12 explosion, 12 bodies were recovered, but perhaps 100 more remain entangled in the wreckage of the control room or locked in the rear compartments, where sailors fled the onrushing sea, then waited in darkness -- some writing farewell notes to loved ones -- for the rescue that never came.
Looking on is a nervous Europe, where there are always fears of another Chernobyl-style radiation spill. Big salvage projects can produce big disasters. In 1974, when the Hughes Glomar Explorer latched onto a Soviet Golf-class submarine that sank in 17,000 feet of water northwest of Hawaii -- part of a secret recovery scheme conceived by the CIA and the U.S. Navy -- the stresses of the lift broke the submarine apart, sending large pieces crashing back to the bottom.
The Kursk will be raised from relatively shallow waters -- less than 350 feet -- but the Kursk weighs nearly 10 times as much as a Golf-class submarine. And if the Kursk breaks apart and spills the radioactive contents of its reactors in the Barents Sea, the results will threaten one of the Arctic's most productive fishing grounds.
"This is a big, super-modern military object which has 22 super-modern missiles on board with big warhead charges -- not nuclear, but powerful charges -- and two reactors, and all this in the center of an area which is in economic use in shallow waters," said Russia's leading submarine designer, Igor Spassky. "I cannot conceive that such an object could be left on the ocean bottom."
"This is the biggest lift ever made from the seabed," points out Malcolm Dailey, the senior consultant with the Dutch heavy lift and transport company Mammoet who is directing the Kursk lift. But even so, he seemed to be full of confidence that -- weather permitting -- it will be done safely.
"Our idea is to peel the Kursk off the bottom," said Dailey, a Briton who now lives in Houston. "The sub is laying at a 5-degree angle, and her bow is stuck into the mud that is the consistency of chewing gum." The mud around the Kursk's bow has risen nearly 10 feet since her sinking last year.
Standing on the deck of the Giant 4 one day late last month as it prepared to depart Amsterdam for the Arctic waters near Kursk, Dailey said that although he worried about radiation accidents and torpedo and missile explosions during the lift, his biggest worry was how to break the suction force of a 17,000-ton ship stuck in the mud. Explosions are one thing, but "mud is mud," he said. The slimy bottom sediments might make the hull seem as if it were glued to the earth.
One great unknown is what hidden structural damage the Kursk suffered along the hull, its ribs, frames and bulkheads when the second and most devastating explosion went off with the force of 10,000 pounds of TNT and produced a shock wave as powerful as an earthquake of 3.5 magnitude.
Much of Dailey's strategy is focused on the first three to four hours of the lifting sequence, when he will raise only the tail of the Kursk, then slide a cable underneath the hull that two auxiliary ships on the surface will pull along the keel trying to separate the Kursk from the mud.
"This is to create a gap to get water between the submarine and the soil so she will want to come up and we can minimize the breakout force," Dailey said.
This "breakout force" is his nightmare. In the worst case, the lifting barge would pull with thousands of tons of pressure against the Kursk only to have it suddenly pop free of the bottom, surge upward like a yo-yo toward the barge, then fall back to the bottom, yanking the barge with a tremendous whiplash that could damage or destroy the lifting equipment.
Before the lift the most important task is slicing off a 45- to 50-foot section of the Kursk's destroyed bow, where torpedo fragments and even complete warheads could be hidden in the debris.
"In the area where the slicing of the compartment will take place, I can say with confidence there are no torpedoes left," said Russian Rear Adm. Mikhail Motsak, chief of staff for the northern fleet. "But there may be torpedoes in the other corners of the first compartment, which are littered with metal debris. That is why we take serious security precautions."
So much of Kursk's bow is destroyed, and so much mud has settled in the first compartment, that Mammoet's engineers feared it might break off during the lift. The Russian navy plans to raise the bow section separately next year to investigate the explosions.
A giant remote-controlled saw began slicing off the bow Tuesday.
Mammoet won the Kursk contract on the strength of its pledge to raise the submarine this year; the company said only bad weather could excuse failure.
Most Russian officials are still sticking to the original Sept. 15 target date for raising the sub to the surface. However, with the weather expected to worsen, they warn that delay is possible.
Deputy Prime Minister Ilya Klebanov, who is overseeing the operation, said last Tuesday that the Kursk would be brought to Murmansk by Sept. 25. A less optimistic Motsak said it could be delivered between Sept. 25 and Oct. 2.
The preparation for raising the Kursk has taken months, and a complex choreography of engineering tasks must be executed in the next few weeks, or the threat of Arctic storms will shut down operations until spring.
"Good weather is a rare thing in this region," said Timur Amirov, the engineer who commissioned the Kursk from the Severodvinsk shipyard in 1994.
This article includes material from The Associated Press.
Considering they probaby stole most of the designs of the electronics and weapons from us, I'd say this is a waste of grenades...
There is a probable risk of a massive nuclear explosion which necessitates the enterprise. It is obviously minimized to avoid panic, but it is the most likely reason for such massive expenditure.
Secondarily, a sailor who dies while on duty would rather be buried at sea.
Finally the Russian government does not have this kind of money to spend on burials.
I am very surprised at your naivetee.
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There doesn't need to be an explosion. In fact, there is nothing in the reactors to explode. Just let the containment vessels around the reactors start to leak and you can make the whole area uninhabitable for centuries.
They sure pulled out all of the stops during the initial rescue attempts didn't they? They deliberatally stalled on responding to requests for assistance....ensuring all on board who hadn't already drowned would be asphyxiated....
The Thresher was lost with all hands as well as another nuc sub in "recent" times (they both quickly sank below crush depth - killing all on board quickly).
The only successful rescue attempt I recall was the Squalus in the late 30's....I don't remember any other sub rescues since then, although the US Navy developed the capability to do so.
...Returning to the Navy Department in July, 1938, he reported for duty as Planning Officer, Personnel Division, Bureau of Navigation (now Bureau of Naval Personnel), and in May, 1939, was ordered to duty in connection with salvaging USS Squalus (SS-192) sunk during a trial run off Portsmouth, New Hampshire. As a member of the Squalus Salvage Unit, he played an important part in the rescue of the 33 survivors and the salvage of the stricken submarine. He received a "Well Done" commendation from the President of the United States for the success of this extremely difficult operation.
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