1) Use stability criteria to estimate the weight of the armor unit for both head and trunk sections of a 2 layer rubble mound breakwater structure with a randomly placed Armor unit of Dolos (Assumed missing values suitably). Given: Hs = (9.5/10) m; T=( 12) s; local d ~ 7.5 m, Slope: 1:1.5, Ss= 2.65, Salinity = 6 ppt.

2) A hurricane at latitude 35 N. with Radius (R) = (74)kilometers, the difference in pressure (dp) =760 - 701 = 59 millimeters of mercury, and forward speed VF = 14 meters per second. Assume for simplicity that a= 1.0. Estimate the deep water significant wave height and period.