India is preparing to relaunch its INS Vikramaditya aircraft carrier after a major refit, a critical step toward fulfilling its plan to deploy two carrier battle groups as it seeks to strengthen its regional maritime power to counter China's increasing assertiveness.

The INS Vikramaditya, a former Soviet carrier acquired from Russia, is expected to be launched imminently and will join India's first domestically built carrier that was launched in September, the INS Vikrant, in undergoing outfitting and sea trials, with the plan to have both fully operational later this year.

"This is significant in terms of India's power projection capabilities, primarily within the Indian Ocean," said Viraj Solanki, a London-based expert on Indo-Pacific defence with the International Institute for Strategic Studies.

"This really gives India an option to display its ability to counter China within the Indian Ocean, which is the Indian navy's priority."

China's People's Liberation Army Navy has been expanding and modernizing for more than a decade and is now the world's largest. In June, it launched its first domestically designed and built aircraft carrier, the country's third overall, as part of a program to extend its range and power and become more of a "blue water" force that can operate globally.

At the same time, China's People's Liberation Army has undertaken massive investment in ballistic and cruise missile technology, and the U.S. Defence Department says it will have the ability to conduct "long-range precision strikes against land targets from its submarine and surface combatants" in the "near term."

As Beijing increases its naval presence around Taiwan and pushes its claims in the South China Sea, the U.S., Britain and other allies have responded with regular naval exercises in the region and passages through the Taiwan Strait as they pursue a policy of a "free and open Indo-Pacific."

China has not yet sailed an aircraft carrier into the Indian Ocean but is expected to do so within the next few years. It already has other vessels operating regularly in the region and has established its first overseas base in the Horn of Africa country of Djibouti, which gives it easy access to the Indian Ocean.

China set off alarm bells in New Delhi in August when it docked what India called a "spy ship" in Sri Lanka's Hambantota port off of India's southern coast, a facility that was leased to China in 2017 for 99 years.

"New Delhi sees Beijing as encroaching into its traditional sphere of influence, especially in the Indian Ocean region," said Ridzwan Rahmat, a Singapore-based analyst with the defence intelligence company Janes.

"While a potential war with China will likely be fought inland, China's presence in the Indian Ocean region can severely disrupt India's sea lines of communication, which will be essential in sustaining the war effort. The Indian navy's recent modernization track is to ensure that scenarios like these will not take root," Rahmat said.

Like China, India has nuclear weapons and has been building nuclear-powered ballistic missile submarines as part of its "nuclear triad" of air, sea and land-based platforms. It currently has two such subs and plans for two more, as well as nuclear-powered attack submarines.

Its fleet also includes 10 destroyers, 12 frigates and 20 corvettes.

India and China clashed on their land border in 2020, with 20 Indian and four Chinese soldiers killed. The skirmish turned into a long standoff in the rugged mountainous terrain where each side has tens of thousands of military personnel.

Retired Indian navy chief Arun Prakash suggested that experience could make the seas more important in the event of a future conflict.

"The 30-month-long Sino-Indian military impasse in the Himalayas and China's strategic posturing in the South China Sea should be clear pointers for India's decision-makers that maritime power will have a critical role to play as an instrument of state policy in future outcomes," Prakash wrote in December in The Indian Express.

With two carriers, India's plan is to have one stationed on each coast, said Capt. D.K. Sharma, a retired Indian navy spokesperson who now consults on defence issues.

India's focus has tended to be toward Pakistan in the west, but with the presence of Chinese vessels in critical shipping lanes east of India, it is prudent for the Indian navy to make its presence felt there as well, Rahmat said.

He cautioned, however, that India still lacks many of the support systems, among other things, to make its carriers effective.

"The vessels themselves may be operational but the Indian navy is still several years away from being able to project its forces credibly into the Indian Ocean region," he said.

Indian Prime Minister Narendra Modi hailed the launch of the Vikrant as a victory in his "Make in India" campaign to become more self-reliant in defence.

The navy has been pushing for another carrier to be made at home, but political concerns coupled with the lengthy delays and massive cost overruns in the construction of the Vikrant have left many skeptical it will ever come to pass, said Indian defense analyst Rahul Bedi.

"The government doesn't really have the money or the vision to go in for another aircraft carrier," he said.

In its proposed 2023-24 budget presented Wednesday, the government increased defence spending by less than 2%, further calling into question major new investments in carriers. Even if it does go ahead, a third carrier would take years to build.

As it outfits the Vikrant, India is expected to decide soon on the purchase of 26 maritime strike fighters - either the French Rafale-M or American F/A-18. The Indian air force already operates a version of Dassault Aviation's Rafale, which would make maintenance easier, while Boeing's F/A-18 can carry more missiles.

The Vikramaditya will continue to operate Russian-made MiG-29K fighters India already owns.

India has been seeking to lessen its reliance on equipment from Russia, which currently provides about 60% of its inventory, with the war in Ukraine raising questions about their effectiveness and the availability of spare parts. The United States and other allies have been pitching themselves to New Delhi as alternatives and are increasing their cooperation with the key regional player as they intensify their own focus on the Indo-Pacific.

However, experts say that even with domestic production and diversification of acquisitions, it could take India 20 years to get past its dependence on Russian supplies and spares. Even before the Russia-Ukraine war, India was increasing its diplomatic engagement with the Quad grouping of the U.S., India, Japan and Australia, the Association of Southeast Asian Nations, and other countries individually, Solanki said.

"This really accelerated after the June 2020 India-China clashes on the border," he said. "That is when we've seen a real shift and focus to engage with the Quad, with France, to engage with the U.K. more actively, work with Europe further ... and work with the ASEAN countries as well."