we take you deep into the world of marine manufacturing to witness the creation and installation of giant ship propellers, from molten metal to precise underwater mounting. Watch as these colossal ...

The propellers of the world's ships ... "You can improve your energy efficiency and reduce your underwater noise with the same kind of things." Strategies with such synergy include reshaping ...

This crank-driven pusher prop looks a bit like an underwater unicycle ... This drives what looks like about a 15-inch (38-cm) propeller. At this point, you start gliding through the water ...

Underwater robots face many challenges ... True, it’s no speed demon compared to a propeller, but it doesn’t disturb marine life or environments as it moves around. This method of movement ...

But it’s when it lands in water that things get interesting ... systems enabled by the tilting propellers and dual gearbox allow it to operate effectively underwater and maneuver in three ...

Imagery released today by Northrop Grumman provides a close up view of one of the two rear propellers of the Manta Ray UUV (uncrewed underwater vehicle). Just a few hours after a new 360° video ...