Аннотация:Results of three-color image-tube surface photometry obtained with the 1-m telescope at the Mount Maidanak Observatory (Uzbekistan) for the galaxies NGC 1620 (UBV), 7292 (UVR), and 7743 (UBR) are reported. Analysis of the two-color diagrams reveals star-forming regions of various intensity in the galaxies. Rotation curves are used to construct models of mass distribution for NGC 1620 and 7292.