Ursa Major is the name of a constellation comprising stars from the head and forelegs of Ursa Major; "pucwan" (ပုဇွန်) is a general term for a crustacean, such as prawn, shrimp, crab, lobster, etc. In Roman mythology, Jupiter (the king of the gods) lusts after a young woman named Callisto, a nymph of Diana. Juno, Jupiter's jealous wife, discovers that Callisto has a son named Arcas, and believes it is by Jupiter. Juno then transforms the beautiful Callisto into a bear so she no longer attracts Jupiter. Callisto, while in bear form, later encounters her son Arcas. Arcas almost shoots the bear,
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