and two cruise gas turbines type M75 with a combined output of . Top speed is . Between 1979 and 1984, 13 ships of the type were built. Another ship, R-55, was rebuilt after its completion as a test vessel for the 'Kortik' short-range defense system for Project 1241.7. Project 1241.RE (NATO: Tarantul-I) To clarify, by NATO's definition, Project 1241.RE (NATO: Tarantul-I) was an export version of Project 1241.1 (NATO: Tarantul-II). This class of ships could be distinguished by the lack of fire control radar on the roof of the bridge. Instead, the fire control radar, X-band "Garpun-Bal" (NATO: "Plank Shave"), built for the anti-ship missiles, was installed on the top of the mast. Other equipment included a small navigation radar type "Kivach-2" on the bridge roof (or MR-312 "Pechera-1" on the ships of Poland), and the gun-fire control radar MR-123 Vympel (NATO: "Bass Tilt") at the foot of the mast. Two PK-16 decoy launchers were also installed. The model of the missiles in the KT-138 launch containers were P-20 (NATO: SS-N-2B), basically they were P-15 updated with the new guidance system but with the original 40 km range. Between 1977 and 1979, 22 ships of this class were produced exclusively for export. Only one of these ships, R-26, was retained by the Soviet Navy for training purposes. India bought five of these ships as s, and would later produce eight ships of the same class domestically. Vietnam also bought four Project 1241.RE ships from various sources over the years. Project 12411 (1241.1M/1241.1MR) (NATO: Tarantul-III/Tarantul-III Mod) Retaining the main armament and basic hull form of the 1241.RE (NATO: Tarantul-I) class, 1241.1M (NATO: Tarantul-III) received important upgrades. Apart from a modest but useful internal redesign, the Tarantul-III had a new type of propulsion—a CODAG (COmbined Diesel And Gas) system. Two M-70 gas turbines (rated at 12,000 hp each) and two M510 (rated at 4,000 hp each) diesel engines were used, being a big improvement over the earlier COGOG system both in terms of serviceability (the two cruise diesels being almost something of a Soviet 'classic'), fuel efficiency and, most importantly, service life expectancy compared to the older NK-12Ms. The maximum speed reached . The superstructures were redesigned and the angled mast of the previous projects has been replaced by a narrow, straight lattice. The sensor position remained almost the same as the Project 1241.1. The "Pechera" navigation radar was off the