At just 19 feet long, it's used to deploy underwater fences. D'awww. ========================================================================== A little baby boat is making waves on Reddit. It may be the smallest ship in the U.S. Navy. The "Boomin Beaver" is a security tug that can tow small ships and deploy underwater fences. One of these boats fetched $100,000 in an auction, which sure seems like a lot for a boat this small. An adorable little tugboat as long as a Ford F-150 is making the rounds on social media, prompting many to call it the “smallest ship in the U.S. Navy.” At just 19...