US PATENT SUBCLASS 405 / 7
.~.~ Vessel support (e.g., bilge or keel block)

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

1  DF  MARINE VESSEL PORTAGE, LAUNCHING, OR REMOVING {3}
4  DF  .~ Dry dock {3}
7.~.~ Vessel support (e.g., bilge or keel block)

DEFINITION

Classification: 405/7

Vessel support (e.g., bilge or keel block):

(under subclass 4) Method or apparatus wherein means are provided to bear the weight or to prevent tilting of a vessel when the water is withdrawn from the basin.