From a total data sample of about 690 pb$^{-1}$ recorded at center-of-mass 
energies
from 161--208 GeV with the OPAL detector at LEP, the W-pair production 
cross section is measured as a function of $\sqrt{s}$.  Measurements of
the W boson branching fractions to leptons and hadrons are also
made at each center-of-mass energy point, and a method for combining
these results accounting for the correlated uncertaintes is presented.