An ACSA/LSA would visibly boost the low-key India-Japan defence relationship. At the Shangri-la Dialogue in Singapore in June, Prime Minister Narendra Modi described relations between New Delhi and Tokyo as “a partnership of great substance and purpose that is a cornerstone of India’s Act East Policy.”
Besides initiating an ACSA/LSA, Hiramatsu said India and Japan might also sign a maritime domain awareness (MDA) agreement, which would enable the two navies to share information about their respective areas of interest. For example, if a Japanese P-1 maritime patrol aircraft detects a Chinese submarine in the Indian Ocean, it would pass on the information to the Indian Navy. An MDA agreement puts more eyes on the job of monitoring an oceanic area of interest. “We are expecting to sign an agreement between Indian and Japanese navies on MDA and maritime security, which will enable more cooperation in this domain,” he said.