By using two propellers that rotate in opposite directions, a ship can use less energy to move forward. New knowledge means ...

If a worn propeller requires repair, the CO2 footprint will be a full 40 percent lower if the job is done in Norway than if ...

Boating is a popular recreational activity, and it could also be used as a form of transportation for moving between coastal and river areas. Since we often don't see a boat's method of propulsion and ...

Joby Aviation (NYSE:JOBY), a company developing electric air taxis for commercial passenger service, announced today that it ...