ARCTIC OCEAN - Chief Petty Officer Jeff Wenciker, a Marine Science Technician assigned to the Coast Guard Cutter Polar Sea, homeported in Seattle, gives hand signals to the crane operator raising the conductivity, temperature and depth machine from the water, while Petty Officer 3rd Class Zach Spence, another MST assigned to the cutter, tends the line to control the machines movement, Oct. 17, 2009. University of Southern Illinois research scientists are conducting the study using this machine and are traveling aboard the Polar Sea. (U.S. Coast Guard photo/ Petty Officer 3rd Class Pamela Manns)