On February 12, 1991, following its two-year long construction at the Israel shipyards, the Nirit class INS Chetz (Arrow) was delivered to the Israel Navy. It was used as a prototype for testing advanced weapon systems which are now a part of the operational systems on Navy ships. Some of the Saar 4 missile boats were upgraded to Nirit class missile boats.
Outstanding features of this class of missile boats include very high survivability, extensive power and weapon systems designed for the naval arena. Advanced weapon systems include improved Gabriel missiles, Harpoon missiles, Barak anti-missile missiles, 76 mm guns, anti-aircraft guns, innovative night vision equipment, electronic warfare systems developed in Israel, a new radar system and a command & control system.
Technical Data - Nirit Class Saar 4.5
Technical Data - Chochit Class Saar 4.5
Sources: Israel Defense Forces