This aluminum boat design (plan) for a 24 ft sportsfisher features a center console and includes a bolster seat and removable canopy (larger version of 21 ft. Welcome to spira international home-built boat plans. spira international offers a wide variety of different power, rowing, and sailing skiffs, dories, and other boat. These free plans for wood dock sections are ideal for residential or light commercial application. we have all the hardware you need to build it right the.