  A search for a new heavy boson $W^{\prime}$ in proton-proton collisions at
$\sqrt{s}$ = 13 TeV is presented. The search focuses on the decay of the
$W^{\prime}$ to a hadronic top quark and a bottom quark, using the full Run 2
dataset of the ATLAS detector. The hadronic decay of the top quark is
identified using DNN-based boosted-object techniques. The dominant background
is obtained by a data-driven method with small systematic uncertainties. The
results are presented as upper limits on the production cross-section times
decay branching ratio for the $W^{\prime}$ boson with right-handed couplings
that decays to a top quark and a bottom quark, for several $W^{\prime}$ masses
between 1.5 to 5 TeV.
