The
Steregushchiy-class corvettes have a steel hull and
composite material 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 fiberglass 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 /
S-350 system.
SS-N-27 (Kalibr Land Attack Cruise Missiles) will be fitted to a larger domestic version, Project 20385. The export version known as Project 20382
Tigr carries either eight supersonic SS-N-26 (
P-800 Oniks)
anti-ship 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 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. Starting from
Aldar Tsydenzhapov, newly built ships of the class received an upgraded sensor mast containing the
Zaslon radar system that was first installed in
Gremyashchiy. == Construction and career ==