US PATENT SUBCLASS 114 / 50
.~ Submerged

Current as of: June, 1999
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114 /   HD   SHIPS

44  DF  VESSEL RAISING AND DOCKING {3}
50.~ Submerged {3}
51  DF  .~.~> Hoisting
52  DF  .~.~> Air tanks {2}
55  DF  .~.~> Sand and mud loosening

DEFINITION

Classification: 114/50

Devices for raising sunken vessels; also means for forcing air into a vessel and expelling the water after sealing up openings.