India will set up a satellite tracking and imaging centre in southern Vietnam that will give Hanoi access to pictures from Indian earth observation satellites that cover the region, including China and the South China Sea, Indian officials said.

The move, which could irritate Beijing, deepens ties between India and Vietnam, who both have long-running territorial disputes with China.

While billed as a civilian facility – earth observation satellites have agricultural, scientific and environmental applications – security experts said improved imaging technology meant the pictures could also be used for military purposes.

Hanoi especially has been looking for advanced intelligence, surveillance and reconnaissance technologies as tensions rise with China over the disputed South China Sea, they said.

“In military terms, this move could be quite significant,” said Collin Koh, a marine security expert at Singapore’s S. Rajaratnam School of International Studies. “It looks like a win-win for both sides, filling significant holes for the Vietnamese and expanding the range for the Indians.”