Large part of deck and cilinderhead

From the previous picture we continue swimming toward the back of the ship. We stay on the left side of the centerline. At a certain point turning around and looking toward the front of the ship we see this large part of the wooden deck. On the right side in this picture we see what we consider to be part of the cilinderhead of the steam engines. But that is speculation. To get a sense of size this cilinderhead is About 1.5 meters high.