EBDG, Miller Marine team up on fully electric truckable tug

(SEATTLE) — Elliott Bay Design Group (EBDG) and Miller Marine of Deltaville, Va., have teamed to design and construct a fully electric truckable tug. The vessel is designed as a multifunctional utility boat servicing marine construction sites, tending dredges, tending buoys, short-range ferry operations and other near-shore operations such as crew transportation or line handling.

EBDG will incorporate an electrical propulsion system into Miller Marine’s proven truckable tug design. Once the design phase is complete, Miller Marine will build the vessel at its 15,000-square-foot production facility.

Elliott Bay Design Group photo

The vessel has an overall length of just under 26 feet and will be powered by two permanent magnet motors with a total power of 300-plus kW (400-plus horsepower). Shore power will be used to recharge the vessel’s battery banks overnight, taking no more than eight hours.

On a full charge, the vessel will operate with contingency for 12-plus hours. A closed-loop fluid cooling system will provide temperature control of the batteries, motors and electronics, maximizing their lifetime. This configuration is ideally suited for shallow and silty water operations.

The electric tug is intended to support public agency and private enterprise marine construction operations and short-range logistics.

– Elliott Bay Design Group

By Rich Miller