New glider sub can go three times deeper than military submarines

Deepglider, the 71-inch long, 138-pound device is made of carbon fiber that dive to 9000 feet (2700 meters). The energy-efficient, battery-powered glider carries sensors to measure oceanic conditions including salinity and temperature — information that is key to understanding climate change. It can also stay out to sea for up to a year.

Boeing assembled the 4-foot hull on the same carbon-fiber machine used to mock up the fuselage barrels for the 787.