The Slocum glider mission was enabled by the Cooperative Research Initiative between the Ocean University of China and the Woods Hole Oceanographic Institution (WHOI) as part of the OSNAP(Overturning in the subpolar North Atlantic Program) array put in place to measure the top basin-wide overturning circulation and associated transport of heat and freshwater (www.o-snap.org). This dataset contains measurements from the first glider mission between June and November 2015 in the Iceland Basin. The data sets are profiles of pressure temperature salinity and have been fully processed calibrated and quality controlled. Data are saved in netCDF format. The structure and naming conventions of the netCDF file follow the OceanSITES data format described here: http://www.oceansites.org/docs/oceansites_data_format_reference_manual.pdf