Download or read book The Mighty Tug John Purves written by Emily Vaughan Lambert and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A nonfiction picture book about the tugboat John Purves. Describes the tug's history and also the history of Captain John J. Roen, head of the Roen Steamship Company in Sturgeon Bay, who purchased the tugboat and named it after his good friend.