Seattle-based naval architecture and marine engineering firm Glosten has completed the contract design package for a comprehensive upgrade to Portland, Ore.-based Shaver Transportation’s Z-drive tractor tug Washington. The design focuses on significantly enhancing the vessel’s performance,
maneuverability, and practical operability, to support Shaver’s evolving harbor and escort towing
service offerings.
The scope of the upgrade includes replacement of the tug’s main engines and installation of
new...