Columbia University scientist Jay Ardie works to decant deep water samples from Nisken bottles hanging in a temporary enclosure on the deck of the attack submarine USS Pogy (SSN 647). The submarine is on a 45-day research mission to the North Pole. Seven scientists and technical advisors are conducting experiments and collecting samples for studies in water mass properties, geophysics, ice mechanics and pollution detection in the Arctic Ocean. The research voyage is the second of five planned deployments through the year 2000.