Charting a New Course with eTugs

Discover Our Lower Emissions Future
Charting a New Course with eTugs

Unparalleled
Crowley is the first to introduce
an all-electric powered harbor
tugboat in the U.S.

Innovative
With the power to get the
job done

Sustainable
While minimizing fuel consumption without sacrificing reliability or performance
Leading the Pack with eWolf
A zero-emissions design brought to life by Crowley in 3D

By the Numbers
In the first 10 years of its use, the eWolf—the first of
more sister tugboats under development by Crowley—
will reduce 178 tons of nitrogen oxide (NO x), 2.5 tons of
diesel particulate matter, and 3,100 metric tons of
carbon dioxide (CO2) versus a conventional tug.
In the News
Master Boat Builders Starts Construction of Crowley’s Zero-Emission Tug
Master Boat Builders has begun construction of Crowley’s eWolf, the first all-electric ship assist tug…
Crowley Will Build and Operate the First Fully Electric U.S. Tugboat
Zero Emissions Ship Assist and Escort Tug eWolf to Serve Port of San Diego Pioneers…
Crowley Completes First U.S. Design for Fully Electric Tug
Electric Tug Design Features Autonomous Technology Crowley Engineering Services has completed the design of the…
Partnerships Built to Last
A proven partner in innovating toward a sustainable future alongside the nation’s ports and
governmental entities. A reliable provider of modern solutions that exceed customer expectations.
We are proud to work with Crowley and couldn’t be more pleased the eWolf will operate exclusively
Chairman Michael Zucchet of the Port of San Diego Board of Port Commissioners
on San Diego Bay
Current Partners






