The Galilee Boat (a.k.a., "the Jesus Boat", in spite of no evidence that it is connected to Jesus directly) is a first-century boat discovered in the mud of Lake Galilee during a drought season. I recommend this lecture by Shelley Wachsmann on the subject:
I was able to visit the museum where the boat is available for viewing. Here are a couple of the pictures I took:
And this next picture gives a visual of how they preserved the boat to lift and float it to where it could be saved from decomposing (the linked article and video talk about this).
Later that day we rode a boat along the Lake toward the area associated traditionally with the Sermon on the Mount (click the right hand side to slide next picture):