Oh thats lovely, thank you for posting! Not often I see my trade in art. If you’re curious, the reason it’s tied up like that is to tension the luff for sewing. The luff is the edge of the mainsail that attaches to the mast. The luff rope is made from three strand rope that stretches when it is under load. So when you sew the sail to it, it needs to be under tension/load for the cloth to be flat when it’s hoisted. You can see the rope sewn to the edge where it trails down the post.
It really does look like that even now, though maybe with not so many people lol. The artist has done a masterful job of depicting the scope of the job, the amount of fabric, the folds of the cloth. I’m going to get a print made for sure!