Calf of Man (Manx: Yn Cholloo [ə ˈxɑːlu]) is a 2.50-square-kilometre (618-acre) island, off the southwest coast of the Isle of Man. It is separated from the Isle of Man by a narrow stretch of water called the Calf Sound. Like the nearby rocky islets of Chicken Rock and Kitterland, it is part of the historic parish of Rushen and the current parish district of Arbory and Rushen. It has only two seasonal inhabitants. The word 'calf' derives from the Old Norse word kalfr which means a small island lying near a larger one. One can reach the Calf of Man by boat from either Port Erin or Port St Mary. Cow Harbour and South Harbour are the main landing places. The highest part of the island is in the west where an unnamed peak reaches 126 m (415 ft) above sea level.