Kawasaki P1 Maritime Patrol Aircraft

[Gronnuck]

Can anyone confirm this was what I saw flying in circles over Groats this afternoon?

[gillsbay]

Probably not, If the same one I saw over Stroma as it had propellors, I think it might be a Lockheed P3.

I have had another look at the photos which I took and the aircraft which I saw was a Royal Canadian Air Force one, this means it is a CP-140 Aurora (based on the P3).
http://www.airforce-technology.com/projects/cp-140-aurora-maritime-surveillance-aircraft/