The Boeing P-8 Poseidon is a military aircraft designed for anti-submarine warfare, intelligence, surveillance, and reconnaissance missions. Developed by Boeing, it is based on the commercial Boeing 737 airliner and features advanced sensors and weapons systems to detect and engage underwater threats. The P-8 is primarily used by the United States Navy and has been adopted by several other countries for maritime patrol. Its capabilities include long-range missions, real-time data sharing, and the ability to deploy torpedoes and missiles, making it a vital asset for modern naval operations.