Steregushchy - class corvette The " Steregushchy " class ( – " vigilant " ) is the newest class of corvette in the Russian Navy . It was designed by the Almaz Central Marine Design bureau . The first two were designated Project 2038 . 0 ( or 20380 ) by the Russian Government ; subsequent vessels were built to an improved design , Project 20385 . At 2 , 200 tons it is large for a corvette and is designated as a frigate by NATO . Project 20382 " Tigr " is an export variant that has been ordered by Algeria . This type has been further developed into the Gremyashchy class corvette . Programme . The ships of the " Steregushchy " class are very large multipurpose corvettes , designed to replace the " Grisha " class . Such ships are used for littoral zone operations , engagement of enemy submarines and surface ships , and gun support of landing operations . The first batch being built at the Severnaya Verf shipyard in St . Petersburg consists of four ships . A second building line has been started at Komsomolsk where orders for at least a further two ships are expected . The lead ship of this second batch will be named " Sovershenny " . The Russian Navy has publicly announced that they expect to buy at least 30 of these ships , for all four major fleets . According to Jane ' s Naval Forces News , the first vessel was commissioned on 14 November 2007 . Export . In 2007 the Indonesian Navy made an agreement in principle ( pending a full contract ) for four vessels of this type to replace their ageing Dutch - built " Fatahillah " - class corvettes . The first was to be built in Spain and fitted out in St Petersburg , leaving open the option of Indonesian involvement in building the subsequent ships . This agreement appears to have lapsed ; in 2011 Indonesia signed a deal for two Milgem class corvette s from Turkey . Rosoboronexport have briefed Singapore and the UAE on the vessel . The first actual contract for the export version , Project 20382 Tigr , was signed at the 5th International Maritime Defense Show in St . Petersburg in July 2011 when Algeria ordered two ships . The cost was estimated at US $ 120 – 150m / ship . However , since Algeria Navy finally choose 3 C28A from China , which is about the same level of displacement as Steregushchy - class corvette , this contract is doubtful now . Design . The " Steregushchy " - class corvettes have a steel hull and composite superstructure , with a bulbous bow and nine watertight subdivisions . They have a combined bridge and command centre , and space and weight provision for eight SS - N - 25 missiles . Stealth technology was widely used during construction of the ships , as well as 21 patents and 14 new computer programs . Newest physical field reduction solutions were applied too . As a result , designers considerably reduced the ship ' s radar signature thanks to hull architecture and fire - resistant radar - absorbent fiberglasses applied in tophamper ' s design . The Kashtan CIWS on the first ship was replaced in subsequent vessels by 12 Redut VLS cells containing 9M96E medium - range SAMs of the S - 400 system . SS - N - 27 ( 3M - 54 Klub ) cruise missiles will be fitted to a larger domestic version , Project 20385 starting with the sixth vessel , " Provornyy " , although 20385 is the name sometimes applied to all ships with the Redut . The export version known as Project 20382 Tigr carries either eight supersonic SS - N - 26 ( P - 800 Yakhont ) anti - shipping missiles or sixteen subsonic SS - N - 25 ' Switchblade ' ( Kh - 35E Uran ) . It also carries two twin - tube launchers for 533mm heavy torpedoes . The A - 190E 100mm gun first used in the Talwar class frigate s is controlled by a 5P - 10E system that can track four targets simultaneously . Protection from air attacks is provided by the Kashtan CIWS and eight mounts for the SA - N - 10 ' Grouse ' ( 9K38 Igla ) SAM . Units . Italics indicate estimates