  The data on investigation of inelastic interactions of $16^O$ nuclei with a
proton at 3.25 A GeV/c momentum by the bubble chamber method are presented. The
separate characteristics as fragments isotopic composition and as topo-logical
cross sections of fragmentation channels are given. The processes of light
fragments formation and breakup of $16^O$ nucleus on multicharge fragments have
been investigated. The comparison of experimental data with the calculations by
statistical multifragmentation model was conducted.
