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 of the ...

Underwater robots face many challenges, not least of which is how to move around. ZodiAq is a prototype underwater soft robot (link is to research paper) that takes an unusual approach to this problem ...

Hydrex diver positioning the blade cutting tool over the propeller blade. © Hydrex Severely bent propeller blade of container ship in Congo. © Hydrex In December ...

In just over a week Hydrex diver/technicians traveled to Finland, Germany, the Netherlands and France to assist shipowners with damaged propeller blades. On two bulkers the blades were cropped while ...

Thanks to ongoing advances in batteries and all things electronic, we've recently been seeing an upswing in the number of underwater propulsion devices hitting the market. Sometimes called underwater ...

The propellers of the world's ships and boats create a constant drone that disrupts ocean life. New propeller designs based on loops could one day quiet that drone and be more fuel efficient. Sharrow ...

Conventional marine propellers remain the standard propulsion instrument for ocean vessels, small to large boats, and underwater vehicles. Considerations are made to match the engine’s power, shaft ...