Life preserver, <i>S.S.S. Propeller</i>, Sea Scouts training vessel. Photographed at Northwest Seaport, Lake Union Park, Seattle, Washington, USA during the 2013 Lake Union Wooden Boat Festival.
<a href="//commons.wikimedia.org/wiki/User:Jmabel" title="User:Jmabel">Joe Mabel</a>
CC BY-SA 3.0
Photo by <a href="//commons.wikimedia.org/wiki/User:Jmabel" title="User:Jmabel">Joe Mabel</a>