Ursa Major but to avert the tragedy, Jupiter turns Arcas into a bear too and puts them both in the sky, forming Ursa Major and Ursa Minor. Callisto is Ursa Major and her son, Arcas, is Ursa Minor. In ancient times the name of the constellation was Helike, ("turning"), because it turns around the Pole. In Book Two of Lucan it is called Parrhasian Helice, since Callisto came from Parrhasia in Arcadia, where the story is set. The Odyssey notes that it is the sole constellation that never sinks below the horizon and "bathes in the Ocean's waves", so it is used
HMS Ursa (1917) 13 July 1928 and broken up. HMS Ursa (1917) HMS "Ursa" was a modified Admiralty destroyer which served with the Royal Navy. The vessel served with the Grand Fleet during World War I. The destroyer took part in the Second Battle of Heligoland Bight while being commanded by Commander John Tovey, who later became Admiral of the Fleet and led the successful action against the battleship "Bismark". "Ursa" was long overall, with a beam of and a draught of . Displacement was . Power was provided by three Yarrow boilers feeding two Parsons geared steam turbines rated at and driving