The Indian Navy (IN; IAST: Bhāratīya Nau Senā) is the naval branch of the Indian Armed Forces.
A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines.
A submarine (or simply sub) is a watercraft capable of independent operation underwater.
Type 53 is the common name for a family of 53 cm (21 inch) torpedoes manufactured in Russia, starting with the 53-27 torpedo and continuing to the modern UGST (Fizik-1).
The Russian 3M-54 Калибр (Kalibr) and 3M-14 Бирюза (Biryuza, Turqoise) (NATO codename SS-N-27 Sizzler and SS-N-30A) are Russian surface ship and submarine-launched anti-ship and coastal anti ship (AShM) and land attack cruise missiles (LACM) developed by the Novator Design Bureau (OKB-8).
The 9K34 Strela-3 (9К34 «Стрела-3»; arrow) is a man-portable air defence missile system (MANPADS) developed in the Soviet Union as a response to the poor performance of the earlier 9K32 Strela 2 (SA-7 Grail) system.