Watercraft having a wind-powered drive unit

Abstract

A watercraft incorporating a wind propulsion system, revealing a main mast and an auxiliary mast. According to the invention, provision is made for a length of the auxiliary mast between a flexible joint and the deck as well as an included angle α from the main mast and deck capable of being locked in position on variable lines.

1 . A watercraft revealing a hull, a main mast and an auxiliary mast arranged on the main mast by means of a flexible joint and an auxiliary mast extending from an area of the deck in the bow of the watercraft, whereby the main mast is connected to the hull of the watercraft on the starboard side and port side, wherein a length of the auxiliary mast between the flexible joint and the deck as well as an angle α between the main mast and the deck is capable of being locked in various positions. 
     
     
         2 . The watercraft according to  claim 1 , wherein the auxiliary mast reveals flexibility, preferably having an elastic modulus of less than 15 GPa, the elastic modulus preferably is in a range from 1 to 10, beneficially in a range from 1 to 6. 
     
     
         3 . The watercraft according to  claim 1 , wherein the auxiliary mast extends from an orifice in the deck or in the hull and designed to be at least partially retractable in the hull. 
     
     
         4 . The watercraft according to  claim 1 , wherein the auxiliary mast comprises tubular components arranged coaxially to one another in one section with one length of the coaxial section capable of being locked in position on various positions and the length of the section is indirectly proportional to the length of the auxiliary mast. 
     
     
         5 . The watercraft according to  claim 1 , wherein the main mast comprises components, which show essentially elongates shape connected to the hull or deck of the watercraft at one initial end on the starboard side and portside and firmly bonded together, in particular materially-bonded, at another end. 
     
     
         6 . The watercraft according to  claim 1 , wherein an angle β between the auxiliary mast and the main mast is in the range of 0 to 90°. 
     
     
         7 . The watercraft according to  claim 1 , wherein the angle α between the main mast and the deck less than 90°. 
     
     
         8 . The watercraft according to  claim 1 , revealing further at least one sail fastened by means of a connecting device to the hull and/or deck, wherein the sail is joined to the main mast on a side facing away from the connecting device. 
     
     
         9 . The watercraft according to  claim 8 , wherein the sail is essentially trigonal or trapezoidal shaped and which is joined, directly or indirectly, to the main mast on one side opposite the corner by means of the connecting device. 
     
     
         10 . The watercraft according to  claim 1 , wherein the watercraft reveals a plurality of sails arranged adjacent to each other and/or on both sides of the auxiliary mast, wherein adjacent sails revealing an overlap not exceeding a 20° area percentage, referencing to the sail area with the sail in the hoisted state.