The
ss Great Britain was the first steam powered, iron hull, ocean liner. She was designed by Isambard Kingdom Brunel and had her maiden voyage in July 1845. She is now on display where she was built in Bristol harbour. There is a lot of information online about her including this:
ss Great Britain at Wikipedia.
The hull of the ss Great Britain can be seen by going down into the dry dock.
The water is kept off the hull by the dock's caisson and a lot of air drying.
(18-Sep-2013 / 27-Sep-2011)
The hull is already heavily corroded (rotted) and the drying is trying to keep it safe for the future.
From within the dry dock you can look at the upper hull through a few centimetres of water. In May 2012 the
ship was "floated" in green jelly (jello) as part of an art project. Unfortunately Mooch could not be there, but this is what he thought it would look like from "under jelly".