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Images: 2005 Alvin Overhaul

Workers use a crane to lift the submersible Alvin from the research vessel Atlantis onto a waiting flatbed truck, used to move the sub to a shop in Woods Hole for the start of the overhaul. (Photo by Tom Kleindinst, WHOI)

Mark Spear, a pilot-in-training, stands on the sub's collection basket while removing a digital camera. Every component will be cleaned, examined, and reassembled during the overhaul. (Photo by Tom Kleindinst, WHOI)

Inside the sub, engineer Rod Catanach takes measurements of components that will be modified during the overhaul. (Photo by Tom Kleindinst, WHOI)

Mark Spear weighs and tags thrusters removed from the sub. Weighing even small objects helps the team determine how much foam will be needed to counterbalance the sub's weight. (Photo by Tom Kleindinst, WHOI)

On the second day of the overhaul, pilot Gavin Eppard (kneeling) and pilot-in-training Anthony Berry disconnect hydraulic pumps and remove cables. (Photo by Tom Kleindinst, WHOI)

Using a crane, the team removes a 2,218-pound piece of syntactic foam, used for flotation. It will be sent out for a fresh coat of paint. (Photo by Tom Kleindinst, WHOI)

People who dive in Alvin call this "the ball." It's the part of the sub that carries a pilot and two scientists to the seafloor for research. At this point in the overhaul, the team has removed it from its frame and has set it in a cradle. Note the three view ports; the one in the front (currently sealed to prevent scratching) is used by the pilot. (Photo by Tom Kleindinst, WHOI)

To get into Alvin, people climb through a hatch on the top of the titanium sphere. (Photo by Tom Kleindinst, WHOI)

Pilot Bruce Strickrott (in hat) uses a crane to lift the final pieces of syntactic foam. Nearly 10,000 pounds of the floatation material is used on the sub. (Photo by Tom Kleindinst, WHOI)

Pilot Anthony Tarantino (on sphere), pilot-in- training Mark Spear, and Expedition Leader Patrick Hickey (red shirt) continue the disassembly. (Photo by Tom Kleindinst, WHOI)

Pilot-in-training Mark Spear helps move one of eight variable ballast spheres. On dives, the spheres are pumped full of seawater to control the sub as it moves up and down. (Photo by Tom Kleindinst, WHOI)

In two weeks, eight people removed thousands of bolts, hoses, and panels, as well as electric and hydraulic systems. It will take nearly three months to put Alvin together again. On the job are members of the Alvin group, including (clockwise from top left) Anthony Tarantino, Gavin Eppard, Mark Spear, Mike McCarthy, Anthony Berry, Bruce Strickrott, and Anton Zafereo. Standing in front is Expedition Leader Pat Hickey. (Photo by Tom Kleindinst, WHOI)