"The dry, one-atmosphere environment of these vehicles provides an alternative to traditional wet submersibles being used by the U.S. and international Special Forces communities today," Lockheed Martin wrote in a statement, "and will deliver operators to their destination in better physical condition to complete a mission."

According to the Daily Mail, Lockheed Martin is currently building three of the vehicles, which have a depth rating of 328 feet and a lock-out depth of 98 feet. With a top speed of 5 knots (or about 6 mph), it won't be the fastest thing underwater, but it offers an upgrade over the open, wet submersibles SpecOps teams currently use, and reduces a mission's overall swim time.

According to Lockheed Martin, the platform will be based on the existing S301i dry manned submersible and will include an Inertial Navigation System, Doppler Velocity Log for navigation support, an Underwater Telephone and UHF radio for communications, and an obstacle avoidance sonar and fathometer. The S302, as it is officially called, will also include support for additional sensors as specific missions require.