At the time it appeared, the song was not a celebration of an existing state of naval affairs, but an exhortation. Although the Dutch Republic, which in the 17th century presented a major challenge to English sea power, was obviously past its peak by 1745, Britain did not yet "rule the waves", although, since it was written during the War of Jenkins' Ear, it could be argued that the words referred to the alleged Spanish aggression against British merchant vessels that caused the war. The time was still to come when the Royal Navy would be an unchallenged dominant force on the oceans. The jesting lyrics of the mid-18th century would assume a material and patriotic significance by the end of the 19th century.