Shallow water wave hindcasting under the SDP measurement data-based wind condition is conducted for each of the 20-selected strong typhoons during the year period of 1911-1959 in Tokyo Bay and for each of the 12-selected strong typhoons during the year period of 1921-1960 in Ise Bay. Extreme value analyses are made using the samples of the annual maximum wave height data produced by combination of the above-mentioned data with the data during the year period of 1961-2005. Extension of data year-length yields a significant increase in a re-estimate of 100-year return wave height H100 in each bay. The largest H100 ranges from 10 m in the outer area to a little over 4 m in the inner area of Tokyo Bay and from 15 m in the outer area to 6.5 m in the inner area of Ise Bay.
