Old tugboats...

[JimD]

http://www.tugboat-pic.com/HORNELL__SEPT.__1974.jpg

http://www.tugboat-pic.com/Mathilda.jpg

... http://www.tugboat-pic.com/

[S/V Laura Ellen]

There is an old tug (1891) in Tobermory, ON currently being used as a dive boat. She is the oldest certified Inland 11 passenger vessel on the Great Lakes. She makes a great liveaboard dive boat.
http://www.tobermory.com/images/sm_dltry.jpghttp://www.tobermory.com/images/bdock.jpg

http://www.tobermory.com/index.html

[Canoeyawl]

http://www.gunkholing.org/Images/wreckelisabeth%20007edit.jpg