The University of Miami's OSNAP (Overturning in the subpolar North Atlantic Program) is an NSF funded project that is part of the international OSNAP array put in place to measure the full depth basin-wide overturning circulation and associated transport of heat and freshwater (www.o-snap.org). The UM array consists of a series of vertical sub-surface moorings deployed along the eastern slope of the Reykjanes Ridge and across the Iceland Basin near 58°N. This dataset contains data from the first two year-long deployments (2014 to 2016) of the Deep Western Boundary Current Array in the Iceland Basin. Eight moorings were deployed on cruise KN221-03 (2014) were serviced on cruise PE400 (2015) and again on DY054 (2016). The data sets are time series of pressure temperature salinity and currents and have been fully processed calibrated and quality controlled. Data are saved in netCDF format with individual files for each instrument time series. The structure and naming conventions of the netCDF file follows the OceanSITES data format described here: http://www.oceansites.org/docs/oceansites_data_format_reference_manual.pdf