From an old post by Bill Vining who built one.
This boat is made from a mold that Steve Clark and Dirk Kramers own. Its a Dirk Kramers design revision #17, so its a DK17. They were looking for a "big and tall" person's A cat and decided to design something with more volume. Even though the bows look like an A2 its got more volume in the bottom of the hulls for those of us who need more volume.
The molds are in RI at Steve's shop.