The U.S. Navy has awarded Boeing a $1.9 billion contract for 11 additional  P-8A Poseidon anti-submarine aircraft built in Renton.

The Navy now has 24 of the Poseidons on order, which will bolster anti-submarine, anti-surface warfare and intelligence, surveillance and reconnaissance capabilities, according to a Boeing press release

This third low-rate initial production award follows two last year that totaled 13 aircraft. Boeing has delivered three of the production P-8As, which are based on the company’s Next-Generation 737-800 commercial airplane, and the Navy plans to purchase 117 to replace its P-3 fleet.

“This contract is a stepping stone to full-rate production, and our focus remains on building Poseidon on cost and on schedule,” said Chuck Dabundo, Boeing vice president and P-8 program manager.

“It has been an exciting and productive year for the P-8A program,” said Capt. Aaron Rondeau, P-8A deputy program manager for the Navy. “The fleet operators in Jacksonville are excited to have received their first three aircraft and look forward to the next delivery as they transition from the P-3 to the first P-8 fleet squadron.”

The Poseidon team in Renton uses a first-in-industry, in-line production process that draws on Boeing’s Next-Generation 737 production system. All P-8A-unique modifications are made in sequence during fabrication and assembly.

After assembly, the aircraft enter Boeing’s mission system installation and checkout facility for final modifications.