The P-8I aircraft incorporates not only India-unique design features, but also Indian-built sub-systems that are tailored to meet the country's maritime patrol requirements.
It features open system architecture, advanced sensor and display technologies and a worldwide base of suppliers, parts and support equipment, the company said in a statement.
Boeing will deliver one more P-8I before the end of the year and two in 2015.
India's Deputy Chief of Naval Staff Vice Admiral RK Pattanaik said the P-8I programme is progressing on schedule, and the aircraft are providing the capabilities to meet India's maritime reconnaissance and anti-submarine warfare requirements.
"This is another important milestone for the program, and we look forward to continuing our great relationship with India," Boeing Defense, Space & Security vice president in India Dennis Swanson said.
Boeing is building India's aircraft through a contract awarded in 2009. Based on the company's Next-Generation 737 commercial airplane, the P-8I is the Indian Navy variant of the P-8A Poseidon that Boeing builds for the US Navy.
With a view to efficiently design and build the P-8I and the P-8A, the Boeing-led team is using a first-in-industry, in-line production process that draws on the company's Next-Generation 737 production system.
