Unarmed?
Armament
As per Iranian Navy Commander Hossein Khanzadi, the ship carried a significantly greater armament compared with the frigates of the same class. Dena was equipped with a vertical launching system, a first for an Iranian ship.[7] The ship was equipped with surface-to-air and anti-ship missiles. It had an armament of four Ghader anti-ship missiles, a 76 mm Fajr-27 naval gun, a 40 mm Fath-40 AA cannon, a 30 mm Kamand anti-aircraft defense cannon, two 20 mm Oerlikon cannons, two 12.7 mm heavy machine guns, and two triple 324 mm anti-submarine torpedo launchers.[5]
Armament
1 × 76 mm DP rapid fire auto-cannon
1 × Fath 40 mm AA cannon; Bofors copy
4 × SSMs C-802 / Noor
2 × crew-served 20 mm cannons Oerlikon
2 × triple 324 mm light torpedoes
4 × Sayad-2 SAMs
2 × chaff dispensers
Aircraft carried 1 × Bell 212 ASW helicopter
Aviation facilities helipad
https://en.wikipedia.org/wiki/IRIS_Dena