<p>This tug and barge is an Articulated Tug and Barge that is owned and operated by VanEnkevort Tug &amp; Barge company.  This pair uses a proprietary ATB connection system called Hydraconn.
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This series was taken as the vessels departed Duluth.  I was standing on the top of the cliff overlooking the Duluth Harbor from Enger Park.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/9197427@N06">Pete Markham</a> from Loretto, USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/pmarkham/17803926091/">Duluth Trip - May 2015 - Tug Joyce L. VanEnkevort and Barge Great Lakes Trader</a>