Velocity fields of the ionised gas of NGC 4330 (left PUMA, right GHASP). The general features of the main disc regions (north-east, central, and south-west), identified by two parallel dashed lines, and the regions with particular features, identified with letters A to H, are discussed in the text. The black bullet and the cross indicate the position of the photometric and kinematical centre, respectively. The black arrow shows the wind direction as derived from the models of Vollmer et al. (2012, 2021).