I recently purchased a day sailor that was sitting in someones backyard uncovered for 10 years. No HIN. Only state MC number which is bogus. The owner didn't want to go through the trouble of getting it properly registered. So, here is what I do know. 18ft seats up to 8 people . Fiberglass, wooden cleats. Manufacturer hull number drilled into the keel housing. 5ft swinging lead keel. Solid aluminum pop-up rudder. Aluminum bump rail. Wood mast support. Totally open cuddy cabin. Can see the entire inner surface of the hull. One sail made in England by Ratsey (still in business) in 1963. Tiller is two piece wood. 4ft from transom to rear of cockpit. 6ft from front of cockpit to tip of bow. Flat bottom. Pictures soon to follow.