A Coast Guard Vessel

I decided to head up to Port Huron next.  There were a couple of normal ships heading downbound that I wanted to catch.  While waiting, I caught the next vessel.

 This is a Response Boat-Medium and is 45 feet long.  The Coast Guard uses this for harbor patrol, search and rescue and other things that they do.

 she passes the Algorail.

 A little while later, she came back.

One more shot of her as she heads out to Lake Huron.