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 ...

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 ...

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

Though submarines were originally devised as stealth vessels, they can make a surprising amount of noise as they soar through the seas. In a bid to tackle this problem, the European Defense Agency ...

In December, Hydrex demonstrated their ability to mobilize anywhere in the world, carrying out a complex underwater propeller repair on a container vessel at anchorage off Pointe Noire, Republic of ...