At 17.53 hours EI-SEA was practicing touch and go circuits on Runway (RWY) 29 when the aircraft veered left off the runway and entered the grass area approx 250m from the (RWY) 29 threshold. The aircraft came to a rest on the grass facing in an easterly direction. The crash alarm sounded and the Airport Fire Service (AFS) responded promptly. The pilot exited the aircraft unaided. There was no fire.