Pulling the Wreck Upright
Nearly two years after the Costa Concordia ran aground, its huge hulk is pulled into a vertical position. Then, one more body is found. The following is adapted from a CNN news report. (Click here to see the original.)
A video of the massive task can be found at the bottom of this page.
Tuesday, September 17, 2013
Today, engineers have succeeded in righting the Costa Concordia.
“She is standing upright better than anyone thought she would be,” said Nick Sloane, the senior salvage master, about the vessel three football fields in length. “When she started moving, she moved slowly but surely. There was no twisting at all. It was exactly as the plan said it would be.”
Using massive pulleys, cables and steel tanks, the 500-person salvage crew from 26 countries rolled the 114,000-ton vessel off the rocks on which it had rested since it ran aground.
“It was a perfect operation, I would say,” said Franco Porcellacchia, the head of the technical team for the cruise line.
The underwater platform built to hold the keel
Side view showing sponsons, platform, and cables
Upright, the ship sits deep in the water
awaiting starbord side sponsons and flotation.
The starbord side is badly smashed
from where it lay on two underwater rocks.
Four hours later, the wrecked ship was resting on the platform, said Franco Gabrielli, the head of Italy’s Civil Protection Authority. Once the ship was righted, a slashing, diagonal line could be seen separating the white paint of the exposed hull from the brownish muck that had collected on its starboard side.
There appeared to be no sign of leaks, Gabrielli told reporters – a promising sign, as the wrecked liner is full of spoiled food, paint, lubricants, insecticides and other toxic items (see below).
“The sides of the ship will need major work and repair, but today we have really taken a clear step to allow the ship to be taken away,” Gabrielli said.
A complex process
Yesterday’s process, known as parbuckling, was the first step in the plan to remove and scrap the 952-foot ship. The Concordia was rotated onto giant platforms 30 meters (about 98 feet) below the water level, which leaves parts of the ship that have been dry for months submerged and filled with water.
No ship this large or heavy had ever been parbuckled before. Normally, crews would have blown up the ship or taken it apart on site – a cheaper route than what’s being done now.
But officials say that wasn’t an option with the Costa Concordia, because the ship is filled with noxious substances (see below) and because two bodies are believed to be either trapped beneath or inside the ship.
Hundreds of people and dozens of companies have collaborated on the preparations, but the parbuckling came down to 12 people, including salvage master Sloane and specialized technicians, who guided the operation from inside a prefabricated control room set up on a tower on a barge in front of the ship.
In preparation, towers were also anchored onto the rocky shore and fitted with computer-operated pulley-like wheels.
When the rotation began, the wheels guided thick cables and chains that pulled the middle third of the ship from under its belly toward Giglio. At the same time, more chains and cables attached to the sponsons welded onto the ship’s port side pulled the ship from the top toward the open sea.
The salvage operators had also set up two rings of oil booms equipped with sponges and skirts that extend into the water, in case the ship should break apart in the process, causing its toxic contents to spread out into the ocean.
What’s inside the wreck?
What happens next?
Much work remains. A robotic submarine equipped with surveillance cameras will survey the damaged side of the ship and create models needed in planning for the attachment of more buoyancy chambers (called sponsons) to the starboard side.
Once those are installed, water will be pumped out of the sponsons to refloat the vessel. Organizers expect the ship won’t be towed away for dismantling until the summer of 2014.
Tuesday’s predawn accomplishment was met with applause from the people of Giglio, a tiny island that was transformed by the disaster.
“We are not at the end of the operation, but this is a very important achievement,” Giglio Mayor Sergio Ortelli said.
The remains of the last two victims
- December 3, 2013 update
The wreck killed 32 of the 4,200 people on board. And the remains of two of them, Russel Rebello of India and Maria Grazia Trecarichi of Sicily, could not be found.
Rebello, 33, was a cruise waiter who was last seen helping passengers off the ship. Trecarichi was on the cruise to celebrate her 50th birthday with her 17-year-old daughter, who survived.
Eventually, in November, 2013, Trecarichi’s remains were positively identified, and she was finally buried. The location of Rebello’s body is still unknown.
19 Hours of Engineering Skill compressed into a 2 minute video
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