Sa'ar 4-class missile boat

The Sa'ar 4 or Reshef class missile boats were built based on Israeli Navy designs grounded in accumulated experience derived in the operation of "Cherbourg" (Sa'ar 1, Sa'ar 2, and Sa'ar 3) classes. Thirteen were built at the Israel Shipyards, ten for the Israeli Navy and three for the South African Navy. Another six were built for the South African Navy in South Africa with Israeli assistance.

Sa'ar 4 boats' first battle engagements were made in the October 1973 Yom Kippur War. During this war, two Sa'ar 4 boats engaged in missile battles with Egyptian and Syrian ships and coastal targets. Israel has sold most of the Sa'ar 4 boats to other navies, however, the INS Nitzachon and INS Atzmaut remain in active Israeli Navy service.

Israel
Ten Sa'ar IV class boats were built for the Israeli Navy. only two remain in service. Three were disassembled, with systems taken for use in the construction of Sa'ar 4.5 class vessels. Three vessels and one hull stripped of systems were sold to Chile. Two vessels were sold to Sri Lanka.

South Africa
The Warrior class strike craft (ex Minister class) in service with the South African Navy are modified Sa'ar IV (Reshef class) fast attack craft. In 1974, a contract was signed with Israeli Military Industries for the construction of three of the modified Reshef class vessels at the Haifa facility of Israeli Shipyards. A further three were built immediately after at the Sandock Austral shipyard in Durban, South Africa, with three more being built at the same facility several years later. The imposition of the international embargo on the sale of arms to South Africa on 4 November 1977 forced the project to be carried out under a cloak of security. The South African variants were fitted with Gabriel missiles, otherwise known as 'Scorpion' missiles, and had two Oto Melara 76 mm guns instead of a single one with a Phalanx CIWS.

Sri Lanka
In 2000, two of the Israeli boats were sold to the Sri Lankan Navy, forming the Nandimithra Class. It is not certain if these boats retain the Harpoon missile capability, however, these boats retained their Gabriel missile capability.

Greece
The Hellenic Coast Guard uses three Sa'ar 4 patrol boats armed only with a 30 mm gun. A crane is installed at the deck space normally reserved for missiles.