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 ...

Over the years the Hydrex R&D department has continuously improved underwater repair techniques to make it possible for Hydrex diver/technicians to perform permanent repairs on seals, thrusters, ...

Hydrex diver/technicians straighten the propeller blades of a large container ship moored off Diego Garcia in the Indian Ocean With all five blades of its propeller severely bent, a 290-meter ...

QinetiQ has recently completed sea trials of a new composite propeller in Falmouth Bay, UK. With a 2.9 metre diameter it is the world’s largest propeller. However, despite its immense proportions it ...

Just when you think you’ve seen all the gorgeous helices in the world, here comes another one. This one trails behind propellers underwater. What causes this helical structure to form? And why is it a ...

Add Yahoo as a preferred source to see more of our stories on Google. A banner-style logo for One Planet Sharrow Marine makes a propeller based on loops that's designed to reduce noise and increase ...