Overview

• Arc will supply electric powertrains while Snow & Co builds the vessels under Curtin Maritime’s $160 million order for eight ship-assist tugs, priced at roughly $20 million each.
• The tugs feature electric-first propulsion with motors exceeding 4,000 horsepower, a 6 MWh battery, and a smaller onboard diesel generator for backup.
• High-power shore charging is planned, with Arc indicating megawatt-class charging to turn tugs quickly between jobs when dockside power is available.
• The first four vessels are committed for delivery before the end of 2027, with operations expected in major ports such as Los Angeles.
• Arc describes the project as the largest commercial deployment of electric workboats to date, citing lower emissions, reduced maintenance and fuel costs, and improved visibility and motor control.