At least 13 people died when an Indian naval boat hit a passenger ferry which then capsized off the coast of financial capital Mumbai, officials have said.
More than 100 people have been rescued, Maharashtra state Chief Minister Devendra Fadnavis said on Wednesday.
The navy said search-and-rescue efforts were continuing.
The 13 dead included one naval servicemember and two representatives of an equipment manufacturer taking part in the tests, the navy said.
Local TV channels showed a boat carrying at least five people hitting the passenger vehicle, causing the accident.
Modi also announced an ex gratia payment of 200,000 rupees ($2,356.63) from the Prime Minister’s National Relief Fund for the next of kin of each deceased in the boat accident and that the injured would be given 50,000 rupees.

The privately owned passenger boat, called Neelkamal, was heading towards the Elephanta caves, a popular tourist destination off the coast of Mumbai, when it capsized, the Brihanmumbai Municipal Corporation said.
The caves, which see a steady stream of tourists throughout the year, are a UNESCO heritage site and were constructed in the fifth and sixth centuries AD.
Boats from the Gateway of India, Mumbai’s southernmost point, make regular trips to ferry tourists to the site, an hour away.