• 2021 April 20 11:18

    Crowley completes first U.S. design for fully electric tug with autonomous technology

    Image courtesy of Crowley Maritime Corporation
    Crowley Engineering Services has completed the design of the first fully electric U.S. tugboat with autonomous technology – providing operators a sustainable and high-performing solution for ship assist and harbor services in any port, according to the company's release.

    The Crowley design, powered by the expertise of recently integrated subsidiary Jensen Maritime, leverages a large battery system and power saving technology to operate in a fully electric mode while producing zero air emissions or greenhouse gases. The 82-foot tug will provide 70 short tons of bollard pull, featuring an Azimuthing drive propulsion system with two 1,800 kW motors and a 6 MWh battery.

    The design also supports fully customizable features to meet the vessel design requirements with the future in mind. The platform design can be adjusted for alternate power capacities suitable for a standard hybrid framework if desired. The fully modular batteries allow for upgrades as technology changes. In addition, Crowley has developed an onshore charging station to fully support charging and reliable performance at the home port.

    With no exhaust stack, the tug has 360 degrees of visibility from the pilot’s station, allowing the operator to see without obstruction.

    The tug has also been designed for future autonomous operation to increase the safety and efficiency of the operation including integrated automation and control systems. The intelligent maneuvering and control system offers more efficient vessel operations and allows masters to focus holistically on the overall control and positioning of the vessel in increasingly busy harbors.

    About Crowley

    Jacksonville, Fla.-based Crowley Holdings Inc. is the parent company of the 129-year-old Crowley Maritime Corporation, a privately-held, family- and employee-owned company that provides worldwide logistics, government, marine and energy solutions. Crowley operates with four business units: Crowley Logistics, a supply chain management division that includes logistics and ocean liner cargo transportation services; Crowley Shipping, which encompasses ownership, operations and management of conventional and dual fuel vessels, including tankers, container ships, multipurpose tugboats and barges; sustainable energy solutions for the emerging offshore wind and liquefied natural gas (LNG) sectors; engineering; project management; naval architecture and vessel construction management; Crowley Fuels, a fuel transportation, distribution and sales division in Alaska; and Crowley Solutions, which focuses on global government services and program management including, ship management, expeditionary logistics, technology solutions, energy solutions and freight transportation and logistics services.




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