Well, it looks like a previous owner has done a lot of work at some point. A quick list: green topsides paint, no lifelines or stern/bow pulpits, after market forward port, looks like an alternate configuration of winches on the coamings (spinnaker?), a scupper on the stern quarter, non-stock cabin-top handrails, navigation lights mounted on teak pads, (and after your pics) engine controls in the cockpit for an outboard, a traveler for your main sheet, and someone has already mentioned your shortened mast... :)
The previous owners of my Ariel lived in Stockton Springs and sailed out of Belfast! Now we sail out of South Portland.
Again, a hearty welcome aboard! As others have already said you'll find tons of info and many great restoration gurus here who are always happy to give advice and tips.