  We present 10.55 GHz observations of strong density-wave spiral NGC 3627.
Total power and polarization maps with a resolution of 1.13', sensitive to a
weak extended emmision were obtained. In the analysiz we used also available
data in the CO ans H_alpha lines. We present simple modelling results showing
the imprtance of large-scale dynamo-type magnetic field present despite the
strong density-wave action in this galaxy.
