6 were ordered in Baglietto Varazze (VAS 231-236), 2 in Costaguta Voltri (VAS 237-238), 4 in Navalmeccanica Castellammare di Stabia (VAS 239-242), 3 in Soriente Salerno (VAS 243-245) and 3 in Celli Venezia (VAS 246-248). I would like to know the dates of laying down, launching and commissioning.