The vessels in this class are 74 metres (243 ft) long with a beam of 11.4 metres (37 ft) and are armed with a Mantra Defense Lynx optronic-directed 40mm 60 cal Bofors Mk3 AA gun or dual 30mm CRN 91 Naval Gun. They are powered by two SEMT-Pielstick 16 PA6 V280 diesel engines driving two propllers. The vessels are equipped with pollution control equipment, two firefighting monitors, a four-tonne crane. They also carry diving equipment, two RIB inspection crafts, a grp[clarification needed] launch, and a hangar for a light helicopter. The Vikram-class vessels have an air-conditioned accommodation for a crew of 11 officers and 85 enlisted sailors.