High Quality Content by WIKIPEDIA articles! Sa'ar 5 (Hebrew: tempest ????) is a class of Israeli navy corvette, designed based on lessons learned from the Sa'ar 4.5 class ships. Three Sa'ar 5 ships were built by Northrop Grumman Ship Systems (formerly Litton-Ingalls Shipbuilding Corporation of Pascagoula, Mississippi) for the Israeli Navy, based on Israeli designs. The Sa'ar 5 ships are the Israeli fleet's most advanced surface ships, costing US$260 million each.