You are looking at a Melges M-20 designed by Buddy Melges in the 60s as the scow alternative to the Flying Dutchman. Having owned a 1968 model, I can say it is a FANTASTIC boat. The only way you need a crew of 6 is if your name is Snow White and your crew lives in a tree. It is a 2-3 man boat and very fast as well as easy to handle. It does have quite a bit of busy work as you change bildgeboads when you tack as well as a running backstay etc. The **** is huge and could carry 6 people. The down side is it is a bit heavy and has no ball system so the raising of the mast is a chore. The boat is sailed heeled to create a 20' wateline with a 3' beam...hence the speed. They also plane like a big windsurfer. The only bad traits on the water is they do not handle chop and waves well and if you let it turtle, like a cat it is tough to right. If I remember the Portsmouth is around 80 which makes it a bit slower than a h-16, and faster than a h-14. It only carries 175' in the main and jib, with about 200' spinnaker...it is not overpowered and a blast to sail on inland lakes.