The Lockheed P-3 Orion is an American built maritime patrol aircraft. The P-3 was also license built in Japan by Kawasaki Aerospace Company for the JMSDF. A version was also built by Lockheed with the electronics suite of the S-3 Viking known as the CP-140 Aurora for Canada. Several variants of the P-3 (including an ELINT version known as the EP-3) have been developed for and operated by the US Navy. P-3s have also been used by the ROCN of Taiwan, the RAAF in Australia, the RNZAF in New Zealand and the ROKN in South Korea.