When the Osty first arrived Torquila and I did some testing. In horozontal fire the Osty could hit out to 2,700 yards. We didn't test the verticle capabilities but from what I hear, the range is increased by some 500+ yards...why I don't know. The 37mm bow mounted gun on the PT has very short horozontal range of less than 2,200 yards, at least that's my experience. The 40mm Bofors gun on the aft deck has a horozontal range of around 3,400 yards but dispersion is a problem at extreem ranges, I hold fire 'till 2,600yds. These numbers may not reflect the actual arena settings but from my experience they are close.