 The Montauk Line has heavy ridership and frequent service as far as Patchogue station and commuter service as far as Speonk station.In the summer, with travelers going out to The Hamptons, Fire Island and other beaches, additional service is operated to the far eastern terminal at Montauk, such as the "Cannonball", a Friday afternoon train departing from Penn Station (originally Hunterspoint Avenue) and running non-stop to Westhampton station in Westhampton.The Montauk Branch, along with the parallel Atlantic Branch, spawns three subsidiary branches