The mathematical model and exact analytical solution of the forced axisymmetric vibrations of semiin-finite cylindrical shell partially submerged into the liquid is constructed. The protruding part of the shell is infinite. The source of the vibrations in the system shell-liquid is incident wave propagating from the infinite side of the shell. The joint oscillations of the shell and ideal compressible liquid are considered. The influence of parameters of the system on vibrational and acoustical fields is analyzed. The energy flux reflected from the place of submerging of the shell into the liquid is considered.