20-40 m

5-10 MWh

Over the first 10 years of its use, the operation of the new eTug will reduce 178 tons of nitrogen oxide (NOx), 2.5 tons of diesel particulate matter, and 3,100 metric tons of carbon dioxide (CO2) versus a conventional tug. The electric tug will replace one that consumes more than 30,000 gallons of diesel per year. The eTug will operate at the Port of San Diego’s Tenth Avenue Marine Terminal and will be operational by mid-2023.

Corvus ESS specifications:

Name Ewolf
Owner Crowley Maritime Corporation
Integrator ABB
Segment Tugs and Workboats
Sub-segment Electric and Hybrid Tugboats
Vessel type Tug
ESS capacity 6200 kWh
Corvus product Corvus Orca ESS
Delivery year 2022
Ship yard Master Boat Builders
Newbuild/Retrofit Newbuild
Vessel size 25 m
Gross tonnage 499 t
IMO no 9992206
Area of Operation North America
Ship system All-electric
Bus Voltage 800-1100 VDC
Class ABS
Flag state USA

Estimated annual savings

Battery operation