This dataset presents a comprehensive set of flow measurements carried out at the FloWave Ocean Energy Research Facility, around a closely spaced staggered array of three nominally 1:15 scale tidal turbines, with a 1.2m rotor diameter, including empty tank baseline data.Dataset and file format described in "Flow data around three SuperGen UKCMER Tidal Turbines in a closely spaced staggered array at FloWave.pdf"