http://www.marinelink.com/news/washburn-doughty-80-ft-z-drive-tug/washburn-doughty-80-ft-z-drive-tug333301
Washburn & Doughty 80-ft Z-Drive Tug
Washburn & Doughty Associates, Inc. of East Boothbay, Maine is pleased to unveil its new 80-ft by 33.8-ft Z-Drive Tug design. Theā¦