Built in 2023, by San Jac Marine, LLC of Channelview, Texas (hull #PB411) as the Green Diamond for the Kirby Corporation of Channelview, Texas.
She is the first plug-in diesel hybrid electric towboat in U.S.
The hybrid system works by combining the diesel generators with batteries to deliver efficient power to the vessel through a centralized Power Management System. A charging system will be used for dockside charging of the battery system, allowing the vessel to operate on trips within the Houston area without needing the generators.
In 2023, the vessel was chartered by Shell Trading Company, of Houston, Texas.
Powered by two, 575 KW Danfoss electric motors, that can be driven either by the Corvus Orca series battery system, which provides 1,243 KWH of power, or, if needed, Caterpillar Generators. She is a twin screw towboat.