In Act I, the witches told Macbeth that he would become the thane of Cawdor, and then the king of Scotland.
HMS Imperieuse (1883) was an Imperieuse-class armoured cruiser launched in 1883. She was converted into a depot ship in 1905 and renamed HMS Sapphire II. The name reverted to Imperieuse in 1909 and she was sold in 1913.
The Pennsylvania class (consisting of the Arizona and the Pennsylvania) formed the next step of the US Navy's response to the naval arms race that had begun in 1906 when the Royal Navy completed the HMS Dreadnought. The ship was launched on June 19, 1915.