I can't tell you anything about service history, but I do know something about Rufus C. Dawes who one of the ships was named for. My wife Sue Dawes Rochester is a great-niece of Rufus Dawes (the brother of her paternal grandfather, Henry M. Dawes). Rufus was named for his father Rufus Dawes, who fought at Gettysburg and in many other civil war battles as the commander of the Sixth Wisconsin Iron Brigade. We returned recently from a Dawes family reunion in Ohio and soon will visit Gettysburg to visit the site of that history. There is much detail on the internet about Rufus, Sr. and son Rufus, so though that part might interest you. I hope the ships were kind to your uncle and he lived a long and happy life.