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MK13 ships are probably built in China, and are reportedly in service since 2006.
Design
Dimensions and machinery
The ships have a displacement of 17.8 t (17.5 long tons) at full load. The class design is 13.5 m (44 ft) long, would have a beam of 3.7 m (12 ft) and a draft of 1.9 m (6 ft 3 in). It uses two Trimax 3200 surface drives, powered by two Isotta 1312T2 MSD diesel engines. This system was designed to provide 2,360 horsepower (1.76 MW) for a top speed of 60 knots (110 km/h). Its cruising radius is 3,000 nautical miles (5,600 km) at a speed of 50 knots.
The ships are equipped with two 324mm torpedo tubes, as well as two anti-ship missile launchers with Nasr. The latter relies on internal guidance and terminal homing to 38 kilometres (21 nmi) at 0.8 Mach.