Building ordered in 1935, laid down by CRDA, Monfalcone, Italy in March 1935, launched on 14 November 1936, completed in October 1938 and in November 1977. Of the Trad-class consisting of the Trad, Puket/Phukey, Patani, Surasdra, Chandaraburi, Rayong, Chunphorn, Chonburi and Songkla, a modified Italian Spica-class design. In 1959 was it a conversion into a anti submarine patrol vessel planned. With a displacement of 318 (standard)-470 (full load) tons and as dimensions 66,8 )between perpendicular)-68.0 (over all) x 6,40 x 2,13 metres. The machinery consisted of Parsons geared steam turbines and 2 Yarrow boilers delivering 9.000 hp via 2 shafts allowing a maximum speed of 31 knots. With a speed of 15 knots and an oil fuel bunker capacity of 102 tons was the range 1.700 nautical miles. Crew numbered 70 men. Armament consisted of3x1-7,6cm cal 40 12 pd Mk I/II/V quick firing guns, 2x1-2cm cal 65 Breda 1939 anti aircraft guns and 6-45cm torpedo tubes (2x2 and 2x1).
