Indigenous Equipment(s) / Effort(s) -
(01) Warship grade steel used for the building the vessel was designed by the Hyderabad-based Defence Research Development Laboratory and production was done by Steel Authority of India Limited (SAIL) of 26,000 tonnes of high-grade “warship steel”.
INS Vikrant's first victory: Being built from Indian steel | Business Standard News
(02) IAC-I is based on
gas turbine engine not on the old boiler designs. Gas turbines are a more advanced propulsion system than the boiler ones.
Navy floats out first Indigenous Aircraft Carrier - The Hindu
(03) The gearboxes for the carriers were designed and supplied by India's own Elecon Engineering.
Elecon to supply gears for India's first aircraft carrier | Business Standard News
(04) The main switch board, steering gear and water tight hatches have been manufactured by India's Larsen and Toubro in Mumbai and Talegaon.
(05) High-capacity air conditioning and refrigeration systems have been manufactured in our Kirloskar Group’s plants in Pune.
(06) Pumps have been supplied by India's Best and Crompton.
(07) Bharat Heavy Electricals (BHEL) supplied the Integrated Platform Management System (IPMS).
(08) The electrical cables are being supplied by India's Nicco Industries.
‘Vikrant’ Reborn in Indigenous Avtar » Indian Defence Review
(09) Naval Variants of LCA Tejas and HAL ALH Dhruv Mk. III are to be used in the possible mix of aircraft carried by INS Vikrant.
Indian Navy And Coast Guard To Get 32 Dhruv Helicopters
Light Combat Aircraft Navy goes super sonic | Latest News & Updates at Daily News & Analysis
(10) Indo-Israeli LRSAM/BARAK-8 is to be used for Air Defence on board INS Vikrant.
DRDO Greets New Defence Minister With Successful LRSAM Test -The New Indian Express
Some other "modern equipment" that I know of -
>> For the IAC-1/INS Vikrant, the IN has selected the Mk 7 hydraulic damping arresting system from the US Navy, while US-based Wire Rope Industries Inc will supply the arrester cables.
>> Another US-based company, Engineered Arresting Systems Corp, will supply the arrester barriers.
>> Other hardware to go on board IAC-1 include twin side-mounted aircraft elevators and their chain-drives from UK-based MacTaggart Scott, while Wire Rope Industries will supply the ammunition hoisting elevators.
>> The CBRN detection sensors will be supplied by US-based Bruker Daltonics, which has for the past decade supplied almost all the CBRN detection sensors for all three of India’s armed services (while the remaining have come from French OEMs). The IAC-1’s inertial navigation system will use Sagem-built SIGMA-40 ring laser-gyros.