The hulls look like Hobie 18's to me, with the inboard deck raised at the beams to accept an arched/curved beam, that's probably why the hulls are now canted. Also the deck has a definite rise going toward the bow, and the bows are not plumb.

The Sol 18 deck was level along its length, had a relatively plumb bow, and the bow was not as deep as the hulls in the photo.

When the Sol first came out it was the "cat's meow", pre Nacra 5.2.