The Navy's Surveillance Towed Array Sensor System (SURTASS) was built to counter the Soviet submarine threat in deep water, but the Navy now plans to use it against the regional—shallow water ...
Apps, G. M. et al. "Structural controls on Tertiary deep water deposition in the northern Gulf of Mexico," in Submarine Fans and Turbidite Systems, eds. P. Weimer et al. (Tulsa, OK: Gulf Coast ...
Communicating with underwater drones is harder than with those in the air because radio waves can’t travel through deep water. The vessels can, though, surface to receive instructions.