New Delhi, July 1 -- The coast guards of India, Japan, the US and Australia have launched the first-ever "Quad-at-sea" mission to boost operational coordination and interoperability in the Indo-Pacific.

The decision to launch the mission was taken at the four-nation's grouping annual summit in Wilmington in September last year that was attended by Prime Minister Narendra Modi and other Quad leaders. "In a significant stride toward strengthening maritime security and interoperability in the Indo-Pacific, the coast guards of India, Japan, the United States, and Australia have launched the first-ever 'Quad at sea ship observer mission' under the Wilmington declaration," the defence ministry said.

"Two officers, including women officers, from...