Acoustic noise data in the frequency range of 0-2 kHz have been recorded in the framework of IP21 cruise (campaign MANGAN2021) of the MiningImpact project (https://miningimpact.geomar.de) during its independent scientific monitoring of the polymetallic nodule collector trials of PATANIA-II (conducted by Global Sea Resources, GSR). Two ocean-bottom hydrophones (GMR_HYA-173 and GMR_HYA-174) were deployed at the trial sites in the BEL and GER working areas in about 50 m distance from the Patania-II test field. Details of the monitoring program and sensor array layout can be found in the IP21 cruise report (doi:10.25928/hw7d-fs42). The soundscape at in total four sites (two in area GER and two in area BEL) was recorded using a single channel hydrophone originally designed for seismic and seismological exploration. Data are the original field recordings in mseed format (https://ds.iris.edu/ds/nodes/dmc/data/formats/miniseed) a standard seismological data format for data exchange and readable with a broad range of programmes or codes.