 The contract was signed on 1 August 1979 and the pennant numbers P10-P15 were assigned until they were changed to P41-P46 in 1988.The first three (P-41-P-43) were commissioned between 1985 and 1987, but "Parker" was delayed until 1990 after flooding on 2 October 1986.Fitting out of "Robinson" and "Gómez Roca" was suspended in 1992, briefly restarted in July 1994 and resumed on 18 July 1997.