Some questions sprang immediately to mind: how do you open this? Some type of tool that fits in the two holes? Where does it lead to? Is there a tank? An engine? To start investigating this, I immediately scanned the Lesley for evidence of a fuel system I discovered two fuel tanks, on either side of the boat, directly under the gas caps. Attached to one of them was a fuel line that led to the center of Lesley but did not connect to anything. This raised more questions: what did the fuel line power? I speculated it was probably for some type of onboard engine, although I could see no immediate evidence (besides the fuel system) of the engine or what it powered. I noted that parts of the fuel system were now green in color, and wondered if they were made of some type of copper alloy, and that the fuel tanks were grey and covered in various degrees of rust. I also noticed looking at the tanks that they were roughly the same size and shape, but one had additional attachments on the head of the drum while the other did not. Why would they be different?
After making notes on these, I proceeded to look for more evidence of a former engine. I could find no propellers or engine mounts or much of anything, but I did find an odd screw connection which led to a hole through the hull. Perhaps this was some kind of exhaust port for the engine, or maybe it fit another component. At this point, I felt I would find no more evidence and instead began speculating the purpose of the engine. Since it was obvious the boat had masts and sails, it did not seem likely the engine was the primary system of propulsion. I figured it was probably for slow speed and close quarters movement into and out of docks and small spaces, especially because it is very hard to maneuver by sail in those areas. I started walking around the boat again, and then noticed something else which could be evidence of the engine.
What I found were several pieces of wood in the bottom of the boat which had various holes and cuts where engine and drivetrain components could have been. It is obvious something ran through them, and the first had odd cuts which could have been part of the engine mounting system. My theory is the center holes may have held the driveshaft or similar component, while the other two carried some type of exhaust system. Or maybe it's the inverse, with the exhaust running through the center in a system with two propellers. Unfortunately the Lesley is too unstable for me to climb in and try to see how the holes line up to investigate further. General research on 1930s boat engine design will help clarify things for me.