A nice warm and sunny day brought us down to Oceanside Harbor for an al fresco lunch. Saw this "thing" in a slip at the impound dock. Anybody care to guess what it is?
That would have been my guess. The visible end is obviously designed to allow people or equipment to be dragged into the raft. I was a Fire Department rescue diver during my career, and we did a lot of ocean rescue training. I am sure that is why I think it is obvious