Mavis, the Little Tugboat, Saves the Bridge - Julie-Ann Crossley - Bog

A part of the Little Tugboat series - true stories of the tug's heroics in a children's series which show random tugboat adventures through the eyes of imaginary tugboat characters and their captains. Contained on every book: Tugboats are the unsung heroes of our waterways - they move other boats and structures through our waterways, such as ships into harbours and small and narrow canals, oil platforms, bridge pylons, and undersea tunnels into place. Some act as icebreakers or salvage boats. Tug boats are the fire engines of the water. No matter what a tug's specific job is, they are strong, nimble, and often overlooked.