Tondar-class fast attack craft

The Tondar class (Persian: تندر, lit. 'thunder', also known as Houdong class) consists of ten fast attack crafts operated by Navy of the Islamic Revolutionary Guard Corps of Iran.

The negotiations to sign a contract for the vessels started in 1991, but was delayed for some time over the type of missiles installed on the ships. The ships were manufactured at Zhanjiang Shipyard, China and were delivered to Iran in two batches, the first five in September 1994 and the remaining in March 1996.

The ships have a standard displacement of 174 tonnes (171 long tons) and 208 t (205 long tons) at full load. The class design is 38.6 m (127 ft) long, would have a beam of 6.8 m (22 ft) and a draft of 2.7 m (8 ft 10 in) and would have used three propeller shafts, powered by three diesel engines. This system was designed to provide 8,025 horsepower (5.984 MW) for a top speed of 35 knots (65 km/h).

According to the 2020 edition of "The Military Balance" published by the IISS, the ships are equipped with two twin launchers that fire Iranian-made AShM, Ghader. 2015–16 version of Jane's Fighting Ships however, had reported that the ships carry four Noor missiles. The missiles rely on active radar homing to 120 kilometres (65 nmi) at 0.9 Mach.

The close-in weapon system on the ships consists of two 30mm/65 twin AK-230 guns, while the secondary armament is two 23mm/87 twin guns.

Tondar-class vessels use Chinese SR-47A surface search radar and RM 1070-A navigation system, both working on I-band. For fire control, they use Type 341 Radar (also known as Rice Lamp) on I/J-band.

The ships in the class which were renamed in c. 2006, are: