[[Image:ORP Kaszub RBU.jpg|thumb|[[ORP Kaszub (1987)|Polish corvette '' Kaszub'']] firing a RBU-6000 rocket depth charge]]

[[File:INS_Trikand_(F51)-image49.jpg|thumb|[[INS Trikand (F51)|Indian frigate ''Trikand'']], completed in 2013, with its RBU-6000 launcher and BrahMos VLS, visiting Portsmouth, UK, on its delivery voyage from St Petersburg.]]

The '''RBU-6000''' '''Smerch-2''' (Реактивно-Бомбовая Установка, ''Reaktivno-Bombovaja Ustanovka''; [[reaction engine]]-bomb installation & Смерч; waterspout) is a 213 mm caliber [[Soviet Union|Soviet]] anti-submarine [[multiple rocket launcher|rocket launcher]]. It is similar in principle to the [[Royal Navy]] [[Hedgehog (weapon)|Hedgehog]] system used during the [[Second World War]]. The system entered service in 1960-61 and is fitted to a wide range of Russian surface vessels. It consists of a horseshoe shaped arrangement of twelve launch barrels, that are remotely directed by the Burya fire control system (that can also control the shorter ranged [[RBU-1000]]). It fires RGB-60 unguided [[depth charges]]. The rockets are normally fired in salvos of 1, 2, 4, 8 or 12 rounds. Reloading is automatic, with individual rounds being fed into the launcher by the 60UP loading system from a below deck magazine. Typical magazine capacity is either 72 or 96 rounds per launcher. It can also be used as a shore bombardment system.