Oceanographic data collected during the EX1404L3 (Northeast Seamounts and Canyons) expedition on the NOAA Ship OKEANOS EXPLORER in the North Atlantic Ocean from September 16, 2014 - October 17, 2014 (NODC Accession 0123118)

Leg III of EX1404 will concentrate on mapping and exploring the New England Seamount Chain using a combination of ROV operations during the day and CTD/Rosette operations in the evening and overnight. Mapping operations will include subbottom data collection over key features, multibeam data collection over canyon heads requiring coverage development, and holiday lines completing previous multibeam data coverages.