Patent ID: 8234991

Claim:
A sail propulsion system for boats, comprising: at least one mast (A) located in the longitudinal midplane of the boat; two lateral shrouds extending obliquely between the head portion of said mast (A) and points of connection to a deck (C) of the boat, located respectively to the right and to the left of the mast (A); a jib (F) controlled by sheets and secured to the head of the mast (A); two booms (B), each one of said two booms (B) being mounted on one of said two shrouds located one to the right and one to the left of the mast (A); and two mainsails (RS, RD), each one of said two mainsails (RS, RD) being rove on one of said two shrouds located one to the right and one to the left of the mast (A) and being arranged on one of said two booms (B).