114 / | HD | SHIPS |
271 | DF | HULL OR HULL ADJUNCT EMPLOYING FLUID DYNAMIC FORCES TO DERIVE A LIFT OR ALTER TRIM, E.G., PLANING HULLS {7} |
274 | DF | .~ Having hydrofoil {4} |
280 | ![]() | .~.~ Having means to tilt or reposition foil or foil adjunct {2} |
281 | DF | .~.~.~> Steerable foil |
282 | DF | .~.~.~> Having means to move foil to a retracted nonuse position |