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B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B63H—MARINE PROPULSION OR STEERING
B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
B63H25/06—Steering by rudders
B63H25/38—Rudders
B63H25/382—Rudders movable otherwise than for steering purposes; Changing geometry
B63H25/383—Rudders movable otherwise than for steering purposes; Changing geometry with deflecting means able to reverse the water stream direction
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FR557728D1921-10-291922-10-23Perfectionnements apportés à la propulsion et à la manoeuvre des bateaux et vaisseaux aériens
ExpiredFR557728A
(fr)