The following ships of the Indian Navy have been named INS Trishul:
The Type 12 or Whitby-class frigates were a six-ship class of anti-submarine frigates of the Royal Navy that entered service late in the 1950s. They were designed in the early 1950s as first-rate ocean-going convoy escorts, in the light of experience gained during World War II. At this time, the Royal Navy were designing single-role escorts and the Whitbys were designed as fast convoy escorts capable of tackling high-speed submarines. However, this made the Whitbys more expensive and sophisticated to produce in large numbers in the event of a major war, and so the Type 14 "utility" or "second-rate" anti-submarine frigate was developed to complement the Type 12. Although themselves rapidly outdated, the Type 12 proved to be an excellent basis for a series of frigate designs used by the British and Commonwealth navies for the next 20 years.
INS Trishul (F43) (Translated as Trident) is the second frigate of the Talwar class of the Indian Navy. Trishul, the guided missile frigate, joined the arsenal of Indian Navy in 2003. The ship was commissioned by the then Flag Officer Commanding-in-Chief, Western Naval Command Vice Admiral Arun Prakash at St. Petersburg, Russia on 25 June 2003. It has a complement of 32 officers and 228 sailors. In contrast to the lead ship INS Talwar, the sea trials of Trishul were considerably shortened as the ship performed well. Trishul arrived in Mumbai on 23 September 2003.
Trishul belongs to the Talwar-class of frigates. The Talwar-class guided missile frigates are modified Krivak III-class frigates built by Russia. These ships use stealth technologies and a special hull design to ensure a reduced radar cross section. Much of the equipment on the ship is Russian-made, but a significant number of systems of Indian origin have also been incorporated.
The surface to air weapons systems include one single-rail MS-196 launcher that can launch the long range Shtil-1 (NATO: SA-17) surface-to-air missile. Eight Igla-1E (NATO: SA-16) portable air defence missiles are on board for short-range threats. Trishul became the second Indian warship to incorporate an eight cell KBSM 3S-14NE Vertical Launcher and was the first to upload the new Indian/Russian designed missile, the supersonic BrahMos PJ-10 ASCM (anti-sub/ship/surface cruise missile). Trishul's VLS can launch the Indian designed 3M-54E Klub-N (NATO: SS-N-27) subsonic ASCM. Trishul has one 100 mm A-190 (E) dual purpose gun mount for surface and air targets. Its rate of fire is 60 rounds a minute at a range of 15 km.