USS HENRY CLAY SSBN-625
ON THE KEEL BLOCKS
(1350 DPI)

Once the ship was firmly sitting on the keel blocks, all lines were tightened and
special wedges were moved into place, underwater, to ensure that the ship could
not slip off the blocks. The drydock then pumped out all of its ballast and rose
out of the water lifting the ship.

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© 2007 Gerald A. Pollack