I've posted before on the Hawaiian outrigger canoes. Here is a video of the traditional Hawaiian sailing canoes, focusing on one in the catamaran configuration. It gets interesting at the back end of the video as the wind and wave conditions approach nuclear in the channel; two helmsman fight to maintain control on the long steering oar aided by another auxiliary helmsman in the leeward hull with a big ass paddle adding some oomph when needed. Got to keep those bows heading straight while surfing down big waves. Spray everywhere. Fascinating!