Rick
It appears that in this photo there is a ruler of sorts? Using it along with the fill size ruler, measure the following:

Foot
Head
Luff
Leach

Send a photo of this when done.

Ron

OK it's not much but this is all that came with the hull. Regards

Ok, that's reasonable. Post a sail plan and we can get going

She is 60cms by 17cms. Sorry I have not replied sooner but the Base Hospital is becoming my second home. Regards

Rick

Just so we are all on the same page, a KITTY SIZED THAMES SAILING BARGE, is 65 tons and carries 1,000 feet of sail. How big a vessel are you working on. . . 😮?

Hi Ricks, I also used cotton poplin, which is the most common fabric for elegant white shirts.
If you don't like white, no problem; you can dye it or give it an antique look.

Hi Rick

Do you have a sail ⛵plan for your vessel? There are a number of us here that can work you through it, like Ron says

Ross

Rick
Are you able to get cotton poplin or a bed sheet? Possibly some fabric dye to make sail a reddish brown ?

If so, then making your own sails is not too difficult, that is unless you’re wanting something that is truly scale with all those hoops and rope stitches that a real canvas sail would have on it along with grommets.
Just a thought