The 'Okeanos Explorer' is conducting mapping operation in the Western North Atlantic as part of the annual ship shakedown. Multibeam and singlebeam mapping operations are being conducted 24/7 between Rhode Island and the U.S.-Canadian territorial boundary, while sub-bottom profile mapping is being conducted each day between the hours of 1000 and 1800 throughout the March 18, 2013, to April 5, 2013 cruise. Research vessels conduct annual ship shakedown tests to perform at-sea testingā¦