A barge being pushed along by a tug boat.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/9763931@N04">Lee Cannon</a> from Bayville aka West Fenwick, DE, USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/leecannon/6622611227/">Chesapeake &amp; Delaware Canal</a>