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We present radio continuum maps of 12 nearby ($D\leq 27~\rm Mpc$), edge-on($i\geq 76^{\circ}$), late-type spiral galaxies mostly at $1.4$ and 5 GHz,observed with the Australia Telescope Compact Array, Very Large Array,Westerbork Synthesis Radio Telescope, Effelsberg 100-m and Parkes 64-mtelescopes. All galaxies show clear evidence of radio haloes, including thefirst detection in the Magellanic-type galaxy NGC 55. In 11 galaxies, we find athin and a thick disc that can be better fitted by exponential rather thanGaussian functions. We fit our SPINNAKER (SPectral INdex Numerical Analysis ofK(c)osmic-ray Electron Radio-emission) 1D cosmic-ray transport models to thevertical model profiles of the non-thermal intensity and to the non-thermalradio spectral index in the halo. We simultaneously fit for the advection speed(or diffusion coefficient) and magnetic field scale height. In the thick disc,the magnetic field scale heights range from 2 to 8 kpc with an average acrossthe sample of $3.0\pm 1.7~\rm kpc$; they show no correlation with eitherstar-formation rate (SFR), SFR surface density ($\Sigma_{\rm SFR}$) or rotationspeed ($V_{\rm rot}$). The advection speeds range from 100 to $700~\rmkm\,s^{-1}$ and display correlations of $V\propto \rm SFR^{0.36\pm 0.06}$ and$V\propto \Sigma_{\rm SFR}^{0.39\pm 0.09}$; they agree remarkably well with theescape velocities ($0.5\leq V/V_{\rm esc}\leq 2$), which can be explained bycosmic-ray driven winds. Radio haloes show the presence of disc winds ingalaxies with $\Sigma_{\rm SFR} > 10^{-3}~\rm M_{\odot}\,yr^{-1}\,kpc^{-2}$that extend over several kpc and are driven by processes related to thedistributed star formation in the disc.

Radio haloes in nearby galaxies modelled with 1D cosmic-ray transport using SPINNAKER