Sailing vessel

Claim 2

A sailing vessel comprising: a hull having a top and a bottom surface; a rigid sail having an elongated, vertically oriented arcuate portion mounted for rotation on the top surface of said hull about a vertical axis, said sail further having a streamlined cross section in a horizontal plane comprising a substantially rounded leading edge and a substantially sharpened trailing edge; and means for rotating said sail with respect to said hull.

Claim 3

The sailing vessel according to claim 1 further comprising a hydrofoil fixed to the bottom of said hull and extending away therefrom.

Claim 4

The sailing vessel according to claim 2 wherein said hydrofoil comprises a first and a second portion, each portion of said hydrofoil having the configuration of at least a portion of a closed curve.

Claim 5

The sailing vessel according to claim 1 wherein said sail further comprises a first and a second elongated member, each elongated member having a vertically oriented arcuate portion, said first and second members being symmetrically oriented about a vertical axis.

Claim 6

The sailing vessel according to claim 4 wherein said sail further comprises: first means for joining the end of said first elongated member which is furthest from the top of said hull to the corresponding end of said second elongated member; and second means for joining the other end of said first elongated member which is closest to the top of said hull to the corresponding end of said second elongated member.

Claim 7

The sailing vessel according to claim 1 wherein the area between the top and the bottom of said hull is substantially filled with a buoyant material.

Claim 8

The sailing vessel according to claim 1 wherein said hull is substantially circular in cross section in a plane parallel to the top of said hull.

Claim 9

The sailing vessel according to claim 7 wherein the diameter of the substantially circular cross section of said hull is greater in a horizontal plane near the top of said hull than the diameter of the substantially circular cross section of said hull in a horizontal plane near the bottom of said hull.

Claim 10

The sailing vessel according to claim 8 wherein a first resilient sheetlike member having an annular opening is fixed to the top of said hull and a second resilient sheetlike member having an annular opening is fixed to the bottom of said hull, the annular openings of said first and second resilient members being coaxial along a vertical axis through said hull, and wherein said hull has an annular opening from the top to the bottom of said hull coaxial with the annular openings of said first and second resilient members.

Claim 11

A sailing vessel comprising: a hull having a top and a bottom surface, said hull further having a substantially circular cross section in a horizontal plane; a rigid sail rotatably mounted on the top surface of said hull, said sail further comprising a first and a second elongated member, each member having a vertically oriented arcuate portion, each sail member being symmetrically oriented about a vertical axis, each member further having a streamlined cross section in a horizontal plane comprising a substantially rounded leading edge and a substantially sharpened trailing edge; and means for rotating said sail with respect to said hull.

Claim 12

A sailing vessel comprising: a hull having a top and a bottom surface, said hull further having a substantially circular cross section in a horizontal plane; a rigid sail rotatably mounted on the top surface of said hull, said sail further comprising a first and a second elongated member, each member having a vertically oriented arcuate portion, each sail member being symmetrically oriented about a vertical axis, each member further having a streamlined cross section in a horizontal plane comprising a substantially rounded leading edge and a substantially sharpened trailing edge; and means for rotating said sail with respect to said hull.

Claim 13

The sailing vessel according to claim 10 further comprising a hydrofoil fixed to the bottom of said hull and extending away therefrom.

Claim 14

The sailing vessel according to claim 11 wherein said hydrofoil comprises a first and a second portion, each portion of said hydrofoil having the Configuration of at least a portion of a closed curve.

Claim 15

A sailing vessel comprising: a hull having a top surface and a bottom surface, the top surface being parallel to the bottom surface, said hull having a substantially circular cross section in a plane which is parallel with the top surface, said hull further having the area between said top surface and said bottom surface substantially filled with a buoyant material; a first resilient sheetlike member fixed to the top surface of said hull and a second resilient sheetlike member fixed to the bottom surface of said hull, for providing a floatable wave resistant hull structure; a rigid sail rotatably mounted on the top surface of said hull, said sail comprising a first and a second elongated member, each elongated member having a vertically oriented arcuate portion, said first and second sail members being symmetrically oriented about a vertical axis, each sail member further having a streamlined cross section in a horizontal plane comprising a substantially rounded leading edge and a substantially sharpened trailing edge; first means for joining the end of said first elongated member which is furthest from the top of said hull to the corresponding end of said second elongated member; second means for joining the other end of said first elongated member which is closest to the top of said hull to the corresponding end of said second elongated member; and means coacting with said second joining means for rotating said sail with respect to said hull.

Claim 16

A sailing vessel comprising: a hull having a top surface and a bottom surface, the top surface being parallel to the bottom surface, said hull having a substantially circular cross section in a plane which is parallel with the top surface, said hull further having the area between said top surface and said bottom surface substantially filled with a buoyant material; a first resilient sheetlike member fixed to the top surface of said hull and a second resilient sheetlike member fixed to the bottom surface of said hull, for providing a floatable wave resistant hull structure; a rigid sail rotatably mounted on the top surface of said hull, said sail comprising a first and a second elongated member, each elongated member having a vertically oriented arcuate portion, said first and second sail members being symmetrically oriented about a vertical axis, each sail member further having a streamlined cross section in a horizontal plane comprising a substantially rounded leading edge and a substantially sharpened trailing edge; first means for joining the end of said first elongated member which is furthest from the top of said hull to the corresponding end of said second elongated member; second means for joining the other end of said first elongated member which is closest to the top of said hull to the corresponding end of said second elongated member; and means coacting with said second joining means for rotating said sail with respect to said hull.

Claim 17

The sailing vessel according to claim 13 further comprising a hydrofoil, said hydrofoil being fixed to the bottom of said hull and extending away therefrom and having a first and a second portion, each portion of said hydrofoil having the configuration of at least a portion of a closed curve.