Bahia 12

A 12 ft mini panga by Jeff Spira of Spira International, drawn in 2013 for a customer who wanted his efficient panga hull in a small size. The V-bottom is meant to handle a short chop while staying easy to push, so a small outboard does the job: the drawings recommend 7 1/2 hp, with 10 hp as the calculated maximum. Length is 11 ft 9 in and beam 4 ft 4 in, the bare hull weighs about 170 lb, and maximum displacement is 820 lb. Spira suggested it for big lakes, fair-weather coastal trips and as a tender for a larger boat.

The hull is 1/4 in plywood (3/8 in optional) fastened with stainless deck screws over frames of ordinary 1x3 lumber on a 2x4 keelson, with chine logs and sheer clamps, then sheathed in epoxy and fiberglass. It takes three sheets of 1/4 in plywood and half a sheet of 1/2 in, and the plans allow the long pieces to be scarfed from shorter stock. Spira called it very easy to build. Measured medians from build logs appear below.

Spira International's website no longer sells plans, so a set may now be hard to find.