Thames Rig Triloboat Synthesis

by Vermont Rice

Here’s a slideshow of the latest Thames Rig / Triloboat synthesis design revision. Dave Zeiger and I have been discussing the concept an “advanced barge,” which features matched curves at the bow coming up from the bottom and in from each side, which will probably reduce turbulence quite a bit and thus increase speed and efficiency. This will require chine logs (internal framing members) that curve in two dimensions, but we can manage this.

Here you can see a sailing vessel concept that is designed using some traditional concepts to perform a traditional function, but uses contemporary materials. The hope is that an amateur crew can build this boat with minimal shop infrastructure in a few months, and that we can transport the finished hull on a mobile home trailer.

The design features a large central cargo hold and an aft cabin and a forecastle for the use of the crew. The forecastle has two berths, and the aft cabin has a head and cooking area, plus a table that may be able to convert to another berth. If we decide to use a wheel rather than a tiller, it would likely be behind the aft cabin and uncovered.

Note the leeboards, which stabilize the craft in lieu of a keel or centerboard. Only the leeboard on the leeward side of the boat is deployed. Leeboards have been used in inshore flat-bottom boats since Roman times. Their ability to be easily retracted makes it easy to beach your boat anywhere, and may help us visit riverside parks and the like for distribution even if they don’t have docks.