India - the largest force in the Gulf of Aden and northern Arabian Sea region - captured the pirates from the cargo ship Ruen last week, three months after it was hijacked off the Somali coast.
Taking advantage of international forces' focus on protecting shipping from attacks in the Red Sea by Yemeni Houthi militants, pirates have made or attempted more than 20 hijackings since November - driving up insurance and security costs and adding to a crisis for global shipping companies.
With the attacks by the Houthis, who claim solidarity with Palestinians in Gaza during Israel's war against Hamas, and the surge in piracy, commercial traffic through the region has halved since November as ships take the longer route around southern Africa, India's navy said.
The pirates seized by Indian commandos face up to life in prison as the first to be prosecuted under India's 2022 anti-piracy law, which enables the navy to apprehend and arrest pirates on the high seas.
Alleged pirates seized by Indian commandos face up to life in prison under its 2022 anti-piracy law. (AP PHOTO)
The Somalis were using the Ruen as their "mother ship" to launch attacks on other vessels, navy Chief Admiral R Hari Kumar told a press conference marking the 100th day of the operations.
The commandos rescued all 17 crew members.
India has responded to 18 incidents, deploying 21 ships and 5000 personnel in rotation, boarding and investigating more than 1000 vessels, the navy said.
Its unprecedented presence has deployed more than a dozen warships on some days.
"The task is to ensure that there is safety, security and stability" in the region, Kumar said.
"We are able to live up to the requirement of being a first responder and a preferred security partner ... to ensure that the Indian Ocean region is safe, secure and stable."
During its mission since mid-December, there have been 57 drone or missile attacks or sightings.
India's navy has helped some of the attacked ships, recovering debris from drones launched by the Houthis, whom Kumar said "we really have no quarrel with".
One recovered plywood drone was capable of travelling 1600km with a four-stroke engine and "elementary" electronics, Kumar said.
"It doesn't require any very complicated tools to develop or manufacture these drones."
