Hey!! The Department of Defence Production of the Ministry of Defence is responsible for the indigenous production of equipment used by the Indian Navy and the other armed forces.

Weapons of Indian Navy are:
Submarine-launched ballistic missile
-Sagarika SLBM
-K4 SLBM (deployed on Arihant-class submarine for trials)

Ship Launched Ballistic Missile
-Dhanush

Cruise/Anti-Ship Missile
Brahmos supersonic cruise missile is becoming the primary anti-ship missile of the Indian Navy.
-K15 Ballistic Missile (Test fired many times)(Submarine Launched Ballistic Missile)
-Brahmos Hypersonic Cruise Missile (Under development)
-Brahmos Supersonic Cruise Missile
-3M-54E/3M-14E Klub Anti-Ship/Land Attack Cruise Missile (SS-N-27 Sizzler)
-Kh-35 (SS-N-25 SwitchBlade)
-P-20 (SS-N-2D Styx)
-Sea Eagle missile
-Harpoon (missile)
-Exocet missile (these missiles are used by scorpene submarine)

Air to Air Missiles
-Derby missile
-R-73 missile
-R-77 missile
-Astra (Under development)

Surface to Air Missiles
-Barak 1
-Barak 8 (Under development)
-SA-N-12 (SA-17 Grizzly)
-SA-N-11 (SA-19 Grison)
-SA-N-7 (SA-11 Gadfly)
-SA-N-5
-SA-N-4 (OSA-M)
-SA-N-1 (S-125M)
-SA-16 (Igla MANPAD)
-Maitri (missile) (project under negotiation with France)

Torpedoes
-Whitehead A244-S anti-submarine torpedo
-APR-3E torpedo
-SET-65E/53-65KE torpedo
-Type 53-65 torpedo (passive wake homing)
-TEST 71/76 anti-submarine, active & passive homing torpedo
-AEG-SUT Mod-1 wire-guided, active/passive homing torpedo
-Advanced Light Torpedo Shyena
-Varunastra(Under development)
-Takshak(Under development)

Main Guns
-OTO Melara 127/64 gun (orders placed for 15 such guns in 2015)
-A-190(E) 100mm
-100mm AK-100 naval gun
-AK-176-M 76mm gun
-AK-76/62 76mm gun
-Twin mount gun (76mm)
-OTO Melara Otobreda 76 mm gun
-Mk.6 Vickers 114mm gun
-Bofors 40mm/57mm/60mm guns
-Oerlikon 20 mm cannon (for Patrol Boats)
-CRN-91 30 mm cannon (for Patrol Boats)

Air Defence Guns
-AK-630 six-barreled 30 mm Gatling gun
-AK-230 twin 30 mm gun
-CADS-N-1 Kashtan

ASW Rocket Launchers
-RBU-6000
-RBU-6000 (RPK-8)
-RBU-12000 (UDAV-1)
-RBU-1000
-GSh-30-1