FOUR AT A TIME—The Puerto Real Shipyard of Astilleros Espanoles S.A. in Spain recently floated out four newbuildings from its huge building dock, which is 525 meters long, 100 meters wide, and 15.5 meters deep (1,722.42 by 328 by 50.85 feet). The four vessels, shown in the dock prior to floatout, are two 31,000-dwt grain carriers, Alianza G-3 and Alianza G-4, building for Alianza Naviera Argentina S.A. of Buenos Aires; and the tankers Castillo De Ricote and Castillo De San Marcos, under construction for Empresa Nacional Elcano of Madrid.