US PATENT SUBCLASS 114 / 130
.~ Vertical drop and pivoted swing

Current as of: June, 1999
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114 /   HD   SHIPS

127  DF  CENTERBOARDS {5}
130.~ Vertical drop and pivoted swing {1}
131  DF  .~.~> Sectional

DEFINITION

Classification: 114/130

Devices in which the centerboard is adapted to be lowered vertically and then swung down to greater depth at will or tilted or turned transversely athwartships.