The Dat Assawari was a frigate operated by the Libyan Navy. The ship was built by VT Group in Britain. It was ordered in February 1968 and delivered in 1973. The ship's design, the Vosper Mk 7 is a modified version of the Alvand class frigate built for the Iranian Navy. The ship had an extensive refit in Italy by CNR Riva Trigoso 1979-80 when new sensors and missiles (as listed in table above) were installed. A further refit was completed in 1990.