What's under the boat?

Here are a few photos I took today, when the boat was en route, and then when we stopped near Shelburne Farms. Here is what it looks like under the boat? You can see a tube hanging down in one. That is how we get hot water during the afternoons for washing dishes. The water travels up the boat when we pump it by foot, and in above the ceiling where it is heated to more than 135 degrees when it gets really hot up there.