Dutch company U-Boat Worx announced the completition of sea trials for the first Super Sub, the fastest private submersible ...

Summary and Key Points: Built under Project 661 "Anchar," the K-222 (Papa-class) remains the fastest submarine in history, hitting a record 44.7 knots submerged. -Designed as a "carrier killer" to ...

This high-tech, three-person submersible can reach speeds of up to 10 knots (11.5 mph), outpacing bottlenose dolphins and ...

Ever looked at a project that seemed so out there and fantastical you thought, "That will never materialize beyond pretty ...