20-40 m

200-500 kWh

Hybrid ice-breaking tug with a flexible propulsion system, allowing zero-emission operation during loitering and transit, and one or two engines running during ship assist, depending on the tonnage.

Corvus ESS specifications:

Name Vilja
Owner Port of Luleå
Integrator Wärtsilä
Segment Tugs and Workboats
Vessel type Escort Tug
ESS capacity 312 kWh
Corvus product Corvus Orca ESS
Delivery year 2019
Ship yard Astilleros Gondan
Ship design Robert Allan TundRA 3600–H
Newbuild/Retrofit Newbuild
Vessel size 36 m x 13 m x 7 m
Payload capacity 100 ton bollard pull
Gross tonnage 775
IMO no 9842542
Area of Operation Port of Luleå, Sweden
Ship system Hybrid
Bus Voltage 650-900 VDC
Class LR
Flag state Sweden

Estimated annual savings


Maintenance cost

0 %

diesel/year saved

0 %

CO2 emission reduction

Battery operation

Peak Shaving

Spinning Reserve

Zero Emissions Operations