  In this paper, we investigate the uniform regularity of solutions to the
3-dimensional isentropic compressible Navier-Stokes system with free surfaces
and study the corresponding asymptotic limits of such solutions to that of the
compressible Euler system for vanishing viscosity and surface tension. It is
shown that there exists an unique strong solution to the free boundary problem
for the compressible Navier-Stokes system in a finite time interval which is
independent of the viscosity and the surface tension. The solution is uniform
bounded both in $W^{1,\infty}$ and a conormal Sobolev space. It is also shown
that the boundary layer for the density is weaker than the one for the velocity
field. Based on such uniform estimates, the asymptotic limits to the free
boundary problem for the ideal compressible Euler system with or without
surface tension as both the viscosity and the surface tension tend to zero, are
established by a strong convergence argument.
