  This is a continuation of the paper [4] of Bleher and Fokin, in which the
large $n$ asymptotics is obtained for the partition function $Z_n$ of the
six-vertex model with domain wall boundary conditions in the disordered phase.
In the present paper we obtain the large $n$ asymptotics of $Z_n$ in the
ferroelectric phase. We prove that for any $\ep>0$, as $n\to\infty$,
$Z_n=CG^nF^{n^2}[1+O(e^{-n^{1-\ep}})]$, and we find the exact value of the
constants $C,G$ and $F$. The proof is based on the large $n$ asymptotics for
the underlying discrete orthogonal polynomials and on the Toda equation for the
tau-function.
