I recently started a huge project, renovating a boat I received as payment for services rendered. My questions is how is this boat constructed and how do I find some form of building schematic for it? Also, how do I find out how old the boat is? The reason I want this information is because I cannot make sense of how the water drains from front to back. The center of the boat is filled solid with insulation, all the way down to the hull. Any help would be greatly appreciated.