The 19 square and the 19 freighter are the same boat. I picked up a sportboat earlier this summer for a friend and had the sportboat and the 19 square side by side. The sportboat stays wider all the way to the stern while the 19 tapers quite a bit like ,well a canoe. I believe the man at the factory said that the two hulls came off the same bending form, but the sportboat finished is a couple of inches wider.