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Cool application of buoyancy.

When they recovered the USS Cole after the bomb attack
they used a floating dry dock ship to get it back to the US.

The Norwegian heavy transport ship "M/V Blue Marlin" did
the job by filling its hull with water, slipping under the disabled
USS Cole and then pumping air into the hull to displace the
water. Effectively scooping up the USS Cole. There are some
remarkable photos of the process at:

Note especially the last shot were you can see some people
for scale. Note also that they placed it diagonally so that the
lower slung screw ("propeller") and sonar could hang over the
side of the M/V Blue Marlin.


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John E. Sohl, Ph.D., Professor of Physics
Director, Ott Planetarium, Weber State University
2508 University Circle, Ogden, UT 84408-2508
voice: (801) 626-7907, fax: (801) 626-7445