Technologies are described herein for sailing wing for a vehicle such as a sailboat. As described herein, a sailing wing includes a main sail and a control surface. The control surface is rotatable around a hinge. When deflected, the control surface using force imparted on the control surface by the wind causes the main sail to rotate about a pivot axis, creating thrust.

Technologies are described herein for sailing wing for a vehicle such as a sailboat. As described herein, a sailing wing includes a main sail and a control surface. The control surface is rotatable around a hinge. When deflected, the control surface using force imparted on the control surface by the wind causes the main sail to rotate about a pivot axis, creating thrust.

Disclosed, as a device for correcting the horizontality of the small ship according to the present invention, is a device for controlling the horizontality of a small ship by using a variable mast, the device comprising: a tilt sensing unit for sensing the tilt of the small ship; a position adjustment unit formed such that at least a portion thereof can move in the horizontal direction on the deck of the small ship, and having a separate mast loaded on an upper part thereof to support the mast such that the mast is located at a predetermined height or higher; and a horizontality control unit for correcting the center of gravity of the small ship by adjusting a position of the mast through the position adjustment unit in correspondence to the tilt sensed by the tilt sensing unit.

Embodiments of the present invention are directed to a passive, automatic wing-control mechanism for sailing vessels. A cam is attached to one end of a rotatable mast as part of a rotatable wing, and a tensioner is configured to exert a constant force perpendicularly against the cam. When a wing is in a no-go sailing angle with respect to an apparent wind, the cam does not exert a torque on the mast. When the wing is outside the no-go sailing angle, the cam exerts a counter-torque to a torque caused by the apparent wind acting on the rotatable wing, causing the wing to remain at a predetermined angle with respect to the apparent wind.

In one embodiment, a method that receives a manifest for plural encoded representations of a single content stream, each representation fragmented into plural chunks, each representation comprising a different quality level, the manifest listing a plurality of representations, each representation comprising the plural chunks at one of a plurality of quality levels, and requests one of the plural chunks based on selection of one of the plurality of quality levels explicitly indicated in the manifest.

A rigging for a wind-propelled vessel includes: a rotating airfoil-shaped mast; a sail movably coupled to a trailing edge of the airfoil-shaped mast and configured to be hoisted or lowered along the airfoil-shaped mast; a swiveling masthead coupled to a top section of the airfoil-shaped mast; and a plurality of stays supporting the airfoil-shaped mast, each stay having a first end connected to the swiveling masthead and a second end connected to a hull of the vessel.

The present disclosure is directed generally toward sailing vessels. One example is a catamaran with one or more pivoting masts per hull member, which may pivot from a generally perpendicular upright position, to a generally flat stowed position toward the bow of the hulls. The masts are capable of sustaining a plurality of sails, which may travel 180 degrees with respect to the hulls.

A collapsible mast of or for a yacht includes a base, a top section, and a rotation mechanism arranged between the base and the top section configured to rotate the top section relative to the base between an upright extended state, in which the top section extends in line with the base, and a collapsed state, in which the top section is rotated downward to reduce a height of the mast. The rotation mechanism comprises an axis oriented transverse through the base. Further, the rotation mechanism comprises a rotation arm, which is rotatably connected to the base via the axis.

The present invention is directed broadly to a marine vessel (10) comprising a deck (12) mounted to a hull (14) together with a sail (16) coupled to the marine vessel (10) via a mast base assembly (18). The mast base assembly (18) comprises a mast tilt assembly (22). The mast base assembly (18) also comprises a mast base mounting (20) to which the mast tilt assembly (22) is pivotally mounted for movement about a tilt axis (24) between stowed and operative positions. The mast base assembly (18) further comprises a sail slew assembly (26) mounted to the sail (16) associated with the marine vessel (10). The sail slew assembly (26) is operatively coupled to the mast tilt assembly (22) for slewing of the sail (16). The sail (16) is rotated or slewed about a slew axis (28) of the mast tilt assembly (22) to reorient the sail (16) relative to the marine vessel (10).

The present disclosure is directed generally toward sailing vessels. One example is a catamaran with one or more pivoting masts per hull member, which may pivot from a generally perpendicular upright position, to a generally flat stowed position toward the bow of the hulls. The masts are capable of sustaining a plurality of sails, which may travel 180 degrees with respect to the hulls.