New Delhi, July 6 -- Defence giant Lockheed Martin will acquire naval defence company Ultra Maritime from Advent International for $3.45 billion, the private equity firm said on Monday.

Ultra Maritime is known for its expertise in anti-submarine warfare technologies. The company develops a range of defence systems, including radar and electronic warfare equipment, as well as torpedo defence countermeasures used by naval forces.

Advent International is said to have put Ultra Maritime up for sale earlier in 2026, reportedly seeking a valuation of more than 3 billion pounds (about $4 billion).

The acquisition would further strengthen Lockheed Martin's position in the global defence industry. The company is among the world's largest milita...