Large-scale H I disc seen in emission along with the velocity field (in colour). The eastern portion of the rotating disc is the approaching side. H I is seen in absorption within a radius of ∼10 kpc (angular resolution of the WSRT observations ∼29″; Struve et al. 2010, angular resolution of the WSRT observations ∼29″). The large-scale low surface brightness radio lobes (WSRT observations with a beam of 39″ × 33″; Shulevski et al. 2012) are shown as black contours. The contours start at 400 μJy beam⁻¹ and increase by a factor of 2. The central CSS source (at 22 GHz with VLA A-array at an angular resolution of 0.12″; Giroletti et al. 2005) is shown in the inset. The position angle of the H I disc is 75° (Struve et al. 2010), while that of the CSS source is 132° (Giroletti et al. 2005).