Left: bulk-motion velocity field of UGCA 105, derived from the low-resolution data cube, with contour levels ranging from 50 to 170 km s^-1, in steps of 10 km s^-1. The thick line represents the systemic velocity of 111 km s^-1. Right: full-resolution H i column density map, overlaid with velocity contours as shown in the left-hand panel. The red ellipse shows the extent of the optical disk (r₂₅).