<prompt> Bhala okuqhubekayo kwalesi sigaba - Ama - skimmer kawoyela asetshenziswa ngokuphumelelayo ekusizeni ekulungiseni ukuchitheka kuka - Exxon Valdez  <response>: ngo-1989. Ama-skimmers kawoyela ahlukile kuma-skimmers okuhlanza amachibi okubhukuda aklanyelwe inhloso efanayo kodwa ehlobene. 