Editor's Note: A team of Rensselaer Polytechnic Institute students was traveling up New York's Hudson River this week on the New Clermont, a 6.7-meter boat outfitted with a pair of 2.2-kilowatt hydrogen fuel cells to power the boat's motors. Their journey began September 21 from Manhattan's Pier 84 and was to cover 240 kilometers (at a projected speed of 8 kilometers per hour). After making several stops along the way, the crew originally expected to arrive back at Rensselaer Polytech's campus in Troy, N.Y., on September 25. This is the fourth of Scientific American.com's blogs chronicling this expedition, called the New Clermont Project.

Unfortunately, the intrepid crew of Rensselaer Polytech's hydrogen-powered New Clermont wasn't able to complete the trip from Manhattan to Troy along the Hudson this week. Chalk it up to complications from mashing several temperamental technologies—namely, hydrogen fuel cells and boat motors—together for the first time.

After spending Thursday morning reinstalling the New Clermont's motors—Wednesday was devoted to troubleshooting the power problems and devising workarounds—crewmembers Casey Hoffman and Leah Rollhaus left the marina in New Hamburg, N.Y., and continued the trip upriver. They soon found, however, that the problems with the boat's fuel cell stack and electric motors hadn't been resolved.

"With less power than normal, I was able to travel up river several miles but began blowing fuses just shy of the Mid-Hudson Bridge in the town of Poughkeepsie," Hoffman blogged. "I decided at that point that the safest thing to do was to return to New Hamburg and figure out what our remaining options are for powering the boat and completing our journey."

The New Clermont's crew has headed back to Rensselaer to regroup and figure out their next step.

Image courtesy of Rensselaer Polytechnic Institute