The Skyrme chiral soliton model of the nucleon is generalized to the case of u, d, s flavours of quarks and applied to the baryon octet and decimet representations ofSU3-flavour. We recall that the physical basis of the model is a topological interpretation of baryon number conservation and a representation of baryons as the solitons of an extended nonlinear mesonicσ-model for chiralSU3-flavour. The chiral Lagrangian consists of the standard quadratic coupling in the meson fields, of the commutatorlike quartic coupling and of the additional couplings specified by the correspondence with the underlying dynamics of QCD, namely the Wess-Zumino-Witten action and the coupling terms responsible for the breaking of the flavour, isospin andUA,1 symmetries. Computations are carried out for the mass spectra of the baryon octet and decimet, the mass splittings and the low-energy single-current observables. Predictions match with observations at a level of 20%.