초록 ▼

High performance sailing yacht designs are disclosed based on a keelless sailing yacht concept having fore and aft cambered foils for leeway control which foils replace the function of the standard keel. A keelless sailing yacht of this type is disclosed with dynamic ballast which is laterally movab

High performance sailing yacht designs are disclosed based on a keelless sailing yacht concept having fore and aft cambered foils for leeway control which foils replace the function of the standard keel. A keelless sailing yacht of this type is disclosed with dynamic ballast which is laterally movable to apply a variable counter-heeling force; a tiltable mast which may have a rotatable mast and sail leading edge; cambered foils for cyclic and collective steering; and adjustable camber controls for adjusting lift and leeway. The foregoing features allow disclosed improvements and modifications to hull design in having a duplex hull form, with lower and upper hull shapes, the lower of low drag shape, and of reduced section, while the upper hull extends laterally abeam from the lower hull for added buoyancy when heeled and for accommodation room.

대표청구항 ▼

A sailing yacht comprising a sailing hull having a bow and a stern extending along a centerline at midships, and having port and starboard sides, and a mast, comprising: a ballast, an elongated strut having one end connected to said ballast for supporting the same, means for mounting said strut to d

A sailing yacht comprising a sailing hull having a bow and a stern extending along a centerline at midships, and having port and starboard sides, and a mast, comprising: a ballast, an elongated strut having one end connected to said ballast for supporting the same, means for mounting said strut to depend from said hull for supporting said ballast generally below said hull for countering heeling thereof under sail and for providing movement of said strut about an axis lying fore and aft on said centerline, means connected to said strut for shifting said ballast to port or to starboard from a generally mid position and for securing said ballast at any position therebetween while said yacht is underway, fore and aft foils mounted for rotation about axes extending below said hull fore and aft of said strut and ballast, a first control means connected to said foils for counter rotation thereof for cyclic steering by turning said foils in opposite directions to port or starboard for creating a yawing moment for steering said yacht on its course, a second control means connected to said foils for turning said foils in the same direction for collective steering, each of said first and second control means being operable independently from the operation of the other.