Hello,

I'm having fun with my 3-masted junk schooner Madam Wong, anchored here at Magnetic Island, QLD Australia!

Sometimes I wish our boat will sail upwind a bit better. And I come up with some ideas...Here's a junk sail with camber; I don't believe anybody's written about this yet.

Take the updated square rig, Dynarig, and format it to a junk sail. Look up s/v Maltese Falcon if you want an example (probably the only example).

Build curved battens (not straight or bendy). Somehow support the battens so it does not droop (like a sad frown :-( drooping). Don't built it with a rotating mast with curved "spreaders" like Maltese....

Then attach the mast to the middle of the battens. So you won't have a luff or leech; you have either port leech or starboard leech, depending on wind direction.

You use single sheeting, but double up. So single sheeting for both leeches. 

I haven't figured out how to do positive stagger on curved battens; maybe extend the upper battens?

When, tacking you have to rotate the sail 120 degrees. Less sail rotating for gybing.

Running down wind, its best to spread the sheet anchor points as far apart as possible. 

What do you think???