The FREE Plans for this 7' 6" X 3' 10" Portuguese Style Dinghy caught my eye some time ago on this site http://koti.kapsi.fi/hvartial/dinghy1/simboii.htm
Decided to build it recently out of lightweight 5mm Luan Ply underlayment and mostly Select Pine boards from a local big box hardware store. The boat has fiberglass tape reinforced filleted seams and is epoxy coated with fiberglass cloth reinforcing the outside of the bottom. Interior and exterior received two coats of Interlux Brightsides Polyurethane (different colors of course). The 2 removable scissor-like very tight fitting cross braces for the center thwart and/or longitudinal seat were my own design.
The boat, as built, is a nice easily handled tender for a cruising Trailer Sailor, weighing in at ONLY 49.7 pounds!
It was a fun build, despite the mostly windless hot Florida weather, and kept me busy and out of trouble for a while. Just need to mount the oarlocks for a "complete" boat which are on the way from Duckworks BBS.
The high bow profile showing the exaggerated sheer and rocker.
The interior view with seats removed. A lot easier to sand, paint, and maintain.
The two (2) scissor-like cross braces doing double duty as side strengthening supports and support for seats. They are positioned about ¾" off the bottom to allow water to drain back to the plug in the transom.
The longitudinal seat needed to balance the boat when carrying two (2) passengers.
Close-up of side supports showing permanent side cleats to maintain proper fore and aft position and gunwale bottom edge to firmly wedge downward into a solid fixed position.