NEW DELHI (PTI): The navies of India, the US, Australia and Japan on Friday concluded the second phase of the Malabar naval exercise in the Arabian Sea that involved two aircraft carriers and a number of frontline warships, submarines and maritime aircraft.

While the first phase of the 24th edition of the Malabar exercise was conducted in the Bay of Bengal from November 3-6, the second phase was conducted in the Arabian Sea from November 17-20, said a statement by the Indian Navy.

The major highlight of the four-day second-phase exercise was participation of Indian Navy's Vikramaditya carrier battle group and the Nimitz strike group of the US Navy.

The USS Nimitz is the world's largest warship.

"The two aircraft carriers, along with other ships, submarine and aircraft of the participating navies, engaged in high intensity naval operations including cross-deck flying operations and advanced air defence exercises by MIG 29K fighters of Vikramaditya and F/A-18 fighters and E2C Hawkeye from Nimitz," the statement said.

The Australian Navy deployed its HMAS Ballarat, an Anzac-class frigate while the Japanese Navy had sent its leading destroyer JS Murasame for the exercise.

The mega exercise took place at a time when India and China are locked in an over six-month-long bitter border standoff in eastern Ladakh.

This exercise involved coordinated operations of increasing complexity among the navies of the four countries which are part of the Quad or Quadrilateral Coalition.