+1 for that being a Dyer Midget sail. The logo is definitely Dyer, and the number of panels is less than the 9’ Dhow.
Here’s what the 9’ Dhow would look like rigged -
Dyer’s are great little boats. The company that makes them is still around so you can still get parts and advice. If you find a hull in need of some restoration it’s not a hard project to bring them back to life. Here’s the thread of my project on a Dhow -
Got a new sailing dinghy