Take a Williwaw 2, stretch it out, and you have a variations that offers additional functions from a classic design. The Tempest 2 makes excellent oar powered cargo rafts when two or more thwarts are removed. The Tempest is often seen on the Middle Fork in a gear in back, oar station in the middle and paddlers up front configuration.
The Tempest 2 with four thwarts is also popular in big water paddle applications on the New and Gauley Rivers in West Virginia, or big water in Maine.
*Thwarts sold separately*