The North Korean Najin-class frigates are some of the largest vessels in the Korean People's Navy. Although they bear a striking resemblance to ex-Soviet Kola-class frigates, they are unrelated to any Russian or Chinese design. The class was originally fitted with a trainable triple 21-inch (533 mm) torpedo launcher, which was replaced in the mid-1980s with fixed P-15 Termit missile launchers taken from Osa-class missile boats. The design is inherently dangerous, and even a minor missile failure would result in significant damage to the ship.
In 2023, two or more of these frigates remain active with North Korea's navy a full half-century after they were commissioned. An estimated two or more have been retired, though what has been done with them since then is unknown.
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