Ocean currents would not allow the glider to cross the Atlantic in a straight line from New Jersey. Scarlet Knight took 221 days and logged about 4,600 miles before it was retrieved about 120 miles off the coast of Galicia, Spain.
SOURCE: Rutgers University Coastal Ocean Observation Laboratory | Bonnie Berkowitz, Patterson Clark and Laris Karklis/The Washington Post - December 15, 2009
Deep-sea glider Article | She was at sea for 221 days. She was alone, often in dangerous places, and usually out of touch. Her predecessor had disappeared on a similar trip, probably killed by a shark. Yet she was always able to do what was asked, to head in a different direction on a moment's notice and report back witho...