Hanse 37. Self-tacking jib. There's the usual block on the clew, a block on the traveler, then the sheet goes up to a sheave about 15 feet up the mast, back down inside the mast, out the bottom, through another block then back to clutch and winch... Why the hell does it go up the mast then back down and exit at the base? Lots of friction, makes furling etc very difficult. Anybody know anything bout this? Thanks!