"The Boeing P-8 Poseidon is far deadlier than its unimposing “maritime patrol aircraft” designation would suggest. This next-generation warplane is the US Navy’s premier sub-hunter, surface ship killer and spy plane combined into one frame. The Poseidon is equipped with such sensitive radars and sensors that it’s able to scan for submarines underwater and even small vessels on the surface of the ocean, all while cruising at high altitude."

https://militarymachine.com/boeing-p-8-poseidon/