Apertif is a phased-array feed system for the Westerbork Synthesis Radio Telescope (WSRT), providing forty instantaneous beams over 300 MHz of bandwidth. A description of the second data release is to be included here. This service queries the calibrated visibility measurement sets. The calibrated visibility data, with cross-calibration and self-calibration solutions applied, are currently stored as an intermediate data product at full time and spectral resolution. These are stored on tape with the raw data and are not immediately available for download. The data release documentation should be consulted for up-to-date information on how to access the data.