Oceanographic data collected during the EX1604 CAPSTONE Wake Island PRIMNM (Preliminary Mapping) expedition on NOAA Ship OKEANOS EXPLORER in the North Pacific Ocean from 2016-03-23 to 2016-04-13 (NCEI Accession 0151630)

Multibeam and singlebeam mapping operations were conducted 24 hours a day throughout the cruise. Sub-bottom profile mapping was conducted 24 hours a day at the discretion of the CO. XBT and/or Underway CTD (UCTD) sound velocity casts in support of multibeam sonar mapping operations were conducted at an interval defined by prevailing oceanographic conditions, but not to exceed 6 hours. All data was fully processed according to standard onboard procedures and is archived with the NOAA National Centers for Environmental Information.