Up for consideration is a rare ship's window of some kind.  I am guessing this to be from the captain's wheel room. The glass slides back and forth and is locked in place by the extremely heavy three bolts.  This window is extremely heavy with a very thick glass.  It was made for heavy sea use. The wood that the window is attached too is I'm guessing what it was attached to the ship with. I was told that this was salvaged from an underwater ship but I am not sure.