For those uncaring about babbling please scroll down to the bottom of the post.

According to various data found on the internet my boat has a displacement of 3000 kg. However, after making a 3D model of it in Delftship it seems to be close to 3200 kg. This might or might not be an error. But when considering loading the boat for long distance cruising I should easily hit 3500 kg which means the initially planned 34 m2 will probably be too small. With 3 tons displacement it clocks at 16.3 while with 3.5 tons is only at 14.75. And if it is around 3.2 tons to start with, it might even go up to 4 tons fully loaded which - considering I might go engineless altogether (which I've mostly have up until now, the outboard has only been used on rare occasions) - would give a SA/disp of 13.5 which is way too low for a small-ish engineless sailboat.

Last winter I considered 41 m2 which translates to:

3 tons: 19.7 SA/disp
3.5 tons: 17.8
4 tons: 16.3

It's on the large side and the previously concieved 188x3mm steel mast might be in for a rough ride, not mentioning the battens which would have to be notably stronger than the ones for a 34 m2 sail. Maybe 37 m2 could be middle ground?

3 t: 17.8
3.5 t: 16
4 t: 14.7

Just for easier reading, here are the numbers (again) for the 34 m2 sail:

3 t: 16.3
3.5 t: 14.75
4 t: 13.5

Then, onto another issue. I've realized that realistically making longer trips (out of the Baltic) will probably require a few years, so I've decided to use polytarp for my sails, which my dad has succesfully used on his boat now for two summers without problems. I have also found a company that would sponsor the materials. This means that when I finally decide to leave this horrible cold existence of the Nordic countries, I will have to sew a new sail. So this one will be a prototype. From which point of view it seems wise to make a slightly larger sail (rather than a smaller one) now so I don't need to extend the battens for the next "final" sail.

From the very start I've been having an inner argument with myself between flat and cambered sails. Arne and Slieve have made clear cases in favor of camber while Kurt has been equally convincing about the merits of flat sails. Camber definitely makes a lot of sense when a) sailing engineless and b) within confined coastal waters. But flat sails also have their advantages, mainly in the ease of construction, design, rig stress and thus longevity. However, you need a slightly larger penis to be able to cope with the handful of boats that will sail by you, when you could've had the chance to beat them by sewing in some camber.

So I've settled for camber and will probably use it unless someone provides me with a compelling argument for sewing a slightly larger flat sail. It would work well as a prototype and a JR introduction for me, and when I build the final offshore sail I would make it a little smaller with proper camber sewed into the lower panels.

Now onto more serious matters. For scientifically unexplained reasons, I've had a thing for David's fanned sail since I first saw the designs and theory behind it and later in practice on Annie's Fantail. Browsing around JRA:s resources I found some drawings of the sail in Box, under Drawings / AnniesConversion, and I was wondering whether the person responsible for making the PDF containing individual panel measurements (FantailSail.pdf) would be willing to do the same for me and my 37 m2(?) sail?

Cliff notes:

34, 37 or 41 m2?
Could someone provide me with detailed panel drawings of the Fantail sail of chosen area?