Now, waves lick at the first row of cottages at Roy Carpenter's Beach following years of erosion and last month's Superstorm Sandy, which carried off thousands of tons of sand along Rhode Island's south shore. Now, the cottages closest to the ocean are being moved back. Szymanski's third-row cottage"Front row now, no row tomorrow," said Szymanski, a contractor who's been coming to Roy Carpenter's Beach since he was a child in the 1960s. "In two years, am I going to be the one with water hitting the house?"In Matunuck, Sandy consumed as much as 50 feet of beach in some spots. Several cottages at Roy Carpenter's Beach were destroyed when the sand underneath them was swept away. All that remained to show the location of one former cottage was a water pipe extruding from the sand.Erosion has posed a constant struggle at Roy Carpenter's Beach and its 377 small cottages. The beach gets its name from the previous owner, who began allowing beachgoers to pitch tents on his beach nearly a century ago. The first cottages were built after the hurricane of 1938. Many of the small hom