You you are intrested in sailing, you may have heard of James Wharram. https://www.sailmagazine.com/multihulls/cat-man-james-wharram Fellow, just after WWII, built a 23 ft Cat in his back yard. He then sailed it to Germany to pick up a couple of friends then crossed the Atlantic ocean. Yeah. Read his story. Cool guy. Still alive and designing boats. Like this one- home built of plywood & fiberglass. see it in action
