When motor torque is applied, the propeller unfolds and powers the boat. When motor torque is cut off, the propeller folds to cut drag for more efficient sailing. With the Hybrid, Gori has added a ...

Scientists say they have created a methodology that could replace two diesel engines powering a ferry boat with pneumatic ...

Not quickly enough. The boat’s propeller struck his upper left thigh and his rear end, leaving two deep lacerations that were 12 inches and 8 inches long. “I just kept saying, ‘Save my leg, ...