 Complete the following phrase:  When Napoleon was crowned Emperor in 1804, he attempted to restore the Navy to a position that would enable his plan for an invasion of England. His dreams were dashed by the Battle of Trafalgar in 1805, where the British all but annihilated a combined Franco-Spanish fleet, a disaster that guaranteed British naval superiority throughout the Napoleonic Wars. Still, the Navy did not shrink from action: among the engagements of this time were the 