The Nampo-class corvettes (or light frigates) are a class of warships built in North Korea.
The class has some similarities to Myanmar Navy UMS Tabinshweht, an Anawrahta-class frigate.
The only weapon system identified is anti-submarine rockets (RBU 1200 A/S mortars), thus making the corvette a response for the recent developments of the South Korean Navy in the field of submarines.
Further weapons could be added however, including guns and anti-ship missiles (such as the Kh-35, known to have been recently put in service in the KPN).
By western standard, the ships should be considered corvettes, however they're also described as light frigates for their role.