Tapi class
In 1969, Thailand ordered from the United States a single small PF 103-class frigate, of which four examples, the Bayandor class, had been built for Iran in the 1960s, with a second example being ordered in 1971. For procurement purposes, they were allocated the US Navy hull numbers PF 107 and PF 108. Total cost=$11 million
Pennant number, Name, Builder, Laid Down, Launched, Commissioned
5(later 431), Tapi, American SB Co, Toledo, Ohio, 1 April 1970, 17 October 1970, 1 November 1971
6(later 432), Khirirat, Norfolk SB, 18 February 1972, 2 June 1973, 10 August 1974
Overall look like Bayandor class, install Raytheon SPS-53E surface search radar and 2×triple Mark 32 torpedo tubes