[1] Echo Voyager is intended to operate extended deep-sea missions at a depth of up to 11,000 feet (3,400 m), with a range of up to 7,500 miles (12,100 km) and an endurance of six months.
[1] Echo Voyager is powered by a hybrid diesel-electric system—submerged, the vehicle uses batteries for propulsion, which are recharged by a diesel-powered generator while it is surfaced.
[2] The system has a power output of about 18 kilowatts (24 hp), and allows Echo Voyager to travel submerged for several days at a time at up to 9 miles per hour (7.8 kn).
[1][4] Beginning in May 2018 and continuing for several more months, Boeing dispatched Echo Voyager on longer deep-sea tests that focused on the craft's ability to operate fully autonomously.
[3] In February 2019, Boeing won a $43 million contract from the United States Navy for four Orca AUVs based on the design of Echo Voyager.