U.S submarines receive long-range communications on very low and extremely low frequencies, but other methods can be used to ...

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 ...

In 1917, a civil engineer pioneered the first deep-sea vehicle to attempt filming underwater. A century later, we have James ...

In 2012, three deep-sea divers were on a routine operation in the North Sea when one of them became trapped underwater. Liu ...

The most recognizable color for many people there is blue, because water molecules ... Sonar rules the deep ocean, enabling the identification of objects through sound waves. Submarines use ...

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.

Ventilation is an important process within the global ocean, where waters sink to deeper layers, are transported by deep currents, and eventually upwelled back to the surface. This process affects the ...

Its applications include mid-water observation ... inspect and image areas inaccessible to the submersible itself. Data and imagery from the deep may be sent to the surface via an acoustic ...