Instant access to 518 different plans – from small wooden boat plans to large sailboat plans – free boat plans. Boat model plans to download the plans presented here are in pdf format, you are free to enlarge or expand them to a printer, to the desired scale.. Does anyone have a picture of a houseboat, a 1998 catamaran aqua cruiser 12 x 38? what is the value of this houseboat? when did ownership change for.