Hi Jack,
You photo you've posted is rather small to make out any detail, but I begin to wonder if, rather than a Pedro you have a different boat.
You'll be aware of the
SeƱorita, a deep keel version of the Pedro, but perhaps not the
Ace of Sails. As you'll see from the links, all three of these were built by a company in Devon. I begin to wonder if your boat is not yet another previously unknown variant, perhaps from the same yard - and from what you say - not even built on the original SeaHawk hull.
I'd be grateful if you could send me a full sized version of your photo (i.e. the file that came out of the camera) so I can study it further, along with any others you have showing the hull under the water line.
You'll find a link to my email address at:
http://www.seahawk17.org.uk/feedback.htmso should be able to attach the files that way.