'belief', also known as Peykaap II[1]) is a class of fast patrol craft which is capable of firing both anti-ship missile and torpedo, and is operated by the Navy of the Islamic Revolutionary Guard Corps of Iran.

Peykaap II is a modified version of North Korean IPS-16, manufactured by Iran.

[2] It uses one surface piercing propeller, powered by two diesel engines.

[2] This system was designed to provide 2,400 horsepower (1,800 kW) for an estimated top speed of 52 knots (96 km/h; 60 mph).

[2] Peykaap II crafts are equipped with two single anti-ship missile launchers with Kowsar or Nasr, which rely on internal guidance and active terminal homing to 38 kilometres (21 nmi) at 0.8 Mach, as well as two single 324 mm (12.8 in) torpedo tubes.