Hi Jonathan and Mark

Although the lug sail is similar to a junk sail when seen in profile, it takes quite different measures to achieve camber in the junk sail’s panels. Have a look at this month’s BOTM, Malena. There you can see the lots of bagginess, which was needed to achieve a camber/chord ratio of 8%. In Newsletter/Magazine 30, p.21 you can read how I did to achieve that bagginess.

Cheers, Arne

PS: You can of course also make the junk sail flat, and in that case things get simpler  -  at the cost of some performance.

Mark,

My guess is that if you do that without adding any round along the battens, the converted sail will still look next-to flat. If I were to convert a sail like that, I would shape each panel with just about the same round as when the cloth came directly from the roll. I guess I would avoid the tack area of the Bm sail if I could.

Good luck,

Arne