And the Tug Kathy Lynn

Across the river from where I was waiting was another tugboat.

 The Kathy Lynn is owned by Ryba Marine.  Again, I'm not sure why she was in Bay City but I think she may have been part of the river dredging.  I think she was bringing a barge full of stuff pulled up from the bottom of the river.

She was originally built in 1944 as an Army tug.  In 1979, she was sold to a company and was known as the Sea Islander.  In 1991, she made her way to the lakes where she got her current name.