The Port of Baltimore’s Wallenius Wilhelmsen terminal rolled out an electric railcar mover in what the port says is a first for the contemporary U.S. maritime industry.
The zero-emissions LOK 16.150E, manufactured by Marmon Rail’s Zephir division of Italy, features an 80-volt rechargeable battery system with onboard charger powering two 40-kilowatt, alternating current, brushless motors. At just over 21 feet in length, the 63,900-pound Zephir has drawbar pull of 39,500 pound-force.
In a promotional video, the port said the Zephir is expected to reduce diesel fuel consumption by 16,000 gallons annually, removing 13.87 tons of nitrous oxide and 182 tons of carbon dioxide emissions.
“At this terminal, the asset will be used to help with intermodal cargo exchange,” said Matt Stahl, Mid-Atlantic terminal general manager, Wallenius Wilhelmsen, in the video. “So coming to and from the port via rail, and to and from the ocean line, as well.”
Zephir will also reduce switching costs, Stahl said.
“We can do it with our own asset, without any assistance.”
Ro-ro specialist Wallenius Wilhelmsen is based in Sweden and Norway.
In a coincidental case of what’s old is new again, the Zephir harks back to battery-powered railcar movers built by the Pennsylvania Railroad in 1912, rubber-tired “locomotives” used to switch freight cars around the narrow streets of the Baltimore waterfront on track curvature too tight for standard motive power.
The PRR classified operators as “chauffeurs,” instead of costlier locomotive engineers.

Find more articles by Stuart Chirls here.
Related coverage:
What shippers should know about ocean carrier alliance changes in 2025
Texas Gulf Coast ports see year-over-year gains in freight volumes
Asia-US ocean rates trend lower but Trump tariff threats shadow trade
Brokerage Compliance Symposium
The day before F3. Every compliance issue you face - fraud exposure, carrier liability, FMCSA rules, cargo theft, insurance gaps - navigated by attorneys and operators defining best practices in a changing industry.
F3 Awards Dinner
The night before F3. FreightTech100 companies honored. FreightTech 25 and Shipper of Choice winners revealed live. Cocktail reception into dinner and live music - 300 industry leaders in one purpose-built room.
F3: Future of Freight Festival
Industry-defining keynotes, rapid-fire technology demos, and industry leaders networking in experiences across Chattanooga - plus the inaugural F3 Awards Dinner featuring the FreightTech and Shipper of Choice reveals.
The day before F3. Every compliance issue you face - fraud exposure, carrier liability, FMCSA rules, cargo theft, insurance gaps - navigated by attorneys and operators defining best practices in a changing industry.
The Signal at Chattanooga Choo Choo • Chattanooga, TN Register NowThe night before F3. FreightTech100 companies honored. FreightTech 25 and Shipper of Choice winners revealed live. Cocktail reception into dinner and live music - 300 industry leaders in one purpose-built room.
The Signal at Chattanooga Choo Choo • Chattanooga, TN Register NowIndustry-defining keynotes, rapid-fire technology demos, and industry leaders networking in experiences across Chattanooga - plus the inaugural F3 Awards Dinner featuring the FreightTech and Shipper of Choice reveals.
The Signal at Chattanooga Choo Choo • Chattanooga, TN Register Now