The menacing appearance of toothy and bug-eyed figureheads on Viking ships were considered a form of apotropaic magic, serving the function of warding off evil spirits.
The Ancient Greeks used the heads of boars to symbolise acute vision and ferocity while Roman boats often mounted a carving of a centurion representing valour in battle.
In northern Europe, serpents, bulls, dolphins, and dragons were customary and by the thirteenth century, the swan was used representing grace and mobility.
[3] During the period from the seventeenth to the eighteenth centuries the carved subjects of figureheads varied from representations of saints to patriotic emblems such as the unicorns or lions popular on British ships.
At the height of the Baroque period, some ships boasted gigantic figureheads, weighing several tons and sometimes twinned on both sides of the bowsprit.
[citation needed] A large figurehead, being carved from massive wood and perched on the very foremost tip of the hull, adversely affected the sailing qualities of the ship.
The few extra feet of length added by the figurehead made Imperator the longest ship in the world at the time of her launch.
For example, Type 42 destroyers of the Royal Navy, which are named after British cities, carry badges depicting the coat of arms of their namesake.