Patrol boats ( Patrulleros de Altura ) built by Bazan based on their 1980s Halcon class Specifications 48crew 1200full load (tn) 68length (m) 10.33beam (m) 3.36draught (m) 20max speed (knots) 7500power (shp) 2Naval Engine diesel - MTU 1Naval Gun Mark 22 3/50 inch (76 mm) Aircraft Typical Max Landing platform only. No hangar Spanish Navy Agusta AB212 01 Spanish Navy Hughes 369HM 01 Shipyards Bazan Ferrol - Ria de Ferrol4 List of Ships Filter: AllES - Spanish Navy .......... 4 Hide Transfers Hide derivatives 1991--Spanish NavyP-71Serviola1991--Spanish NavyP-72Centinela 1992--Spanish NavyP-73Vigia1992--Spanish NavyP-74Atalaya4 units Events 1990-may-10LaunchedLaunched P-71 Serviola 1990-oct-30LaunchedLaunched P-72 Centinela 1991-mar-22CommissionedCommissioned P-71 Serviola 1991-apr-14LaunchedLaunched P-73 Vigia 1991-sep-24CommissionedCommissioned P-72 Centinela 1991-nov-22LaunchedLaunched P-74 Atalaya 1992-mar-24CommissionedCommissioned P-73 Vigia 1992-jun-29CommissionedCommissioned P-74 Atalaya