Second Indian built PROJECT 1135.6 frigate launched 28/03/2025 | Mike Rajkumar

The second Indian built PROJECT 1135.6 frigate TAVASYA has been launched at Goa Shipyard Limited (GSL) on India’s West Coast.

India and Russia had entered into an Inter-Governmental Agreement (IGA) in October 2016 for the construction of two additional PROJECT 1135.6 frigates at GSL, which are scheduled for delivery in June 2026 and December 2026 respectively.

GSL was contracted for the construction of the two warships in January 2019. The first ship TRIPUT, was launched in July 2024.

The PROJECT 1135.6 frigates are upgraded KRIVAK III class frigates. The Indian Navy already has 7 of these ships in service which were built in Russia, including 3 TALWAR class ships built at Baltiysky shipyard, St. Petersburg, and 4 follow-on TEG class ships, built at Yantar shipyard, Kaliningrad.

The P 1135.6 series of frigates are customised to meet the Indian Navy’s specific requirements and have advanced stealth features including a special hull design, that limits the warship’s Radar Cross-Section, thus featuring low electromagnetic, Infra-Red (IR) and underwater noise signatures.

The TRIPUT and TAVASYA measure 124.8 meters in length and 15.2 meters in width, with a 4.5m draft. These vessels are designed for multi-role operations including anti-ship, anti-submarine, and anti-air warfare.

For armament, the ships carry BrahMos Aerospace's BRAHMOS supersonic cruise missiles (Mach 2.8) or KLUB anti-ship missiles. For air defence, the frigates are equipped with Tekhnodinamika Group's SHTIL-1 medium-range surface-to-air missile system. Close-in defence is provided by either the Kashtan system or Tulamashzavod's AK-630M weapon system, which features a rotary 30mm cannon with a rate of fire of 4,000-5,000 rounds per minute.

The ships also feature JSC TsNII Burevestnik's A-190-01 UNIVERSAL 100 mm naval gun, torpedo tubes from Marshall Slingsby Advanced Composites, and anti-submarine rocket launchers similar to systems like the RUR-5 ASROC.

These frigates have over 56% indigenous content compared to 25% in similar ships constructed abroad. With a displacement of approximately 3,800 tons, these vessels can operate naval helicopters like the Kamov Ka-27 or Ka-31, enhancing their operational flexibility across different maritime theatres.

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