Coastal areas are oftentimes in need of harbors, but cannot afford breakwaters using conventional design. PND addressed this problem by aiding in the development and research of "berm breakwaters." These porous structures use relatively smaller uniformly-graded rock than conventional designs, and thus are often less costly. The breakwater at St. George Island in the Pribilofs, having weathered some of the largest storms recorded in the Bering Sea, attests to the success of this design. This harbor was built for approximately half the cost of more customary designs and is one of the first of its kind in the world.