 Traveling at their cruise speed they have a range of with a 12-day endurance.The ships are manned by a crew of 32.The Armament configuration differs between the first two ships and the last one; DBM-241 and DBM-81 are armed with two AK-230 CIWS mounted on the sides, a single quadruple M-75 gun on the stern and a single quadruple MTU-4 9K32M Strela-2M (SA-7b "Grail") anti-aircraft missile launcher.