The Vikings also used to make sacrifices to ensure the safe passage of their vessels.
In Medieval England, ships had religious shrines on board to promote the blessings of the Catholic saints they then worshipped, and they would pour out libations of wine in order to appease them.
During the modern ceremony, Camilla, who is known as the Duchess of Rothesay in Scotland, will speak the words:
"I name this ship the HMS Prince of Wales, may God bless her and all who sail in her."
She will then cut a ribbon on the highly decorated ship, and smash a bottle of Champagne over its bow - the modern-day equivalent of libations.
As the Champagne bottle smashes, drums will sound, and a band will begin playing music.
When it comes to renaming a boat, things get a little more complicated…
Maritime superstition states that should you fail to properly rename your boat, then you are doomed to a lifetime of bad luck.
This is because, according to legend, the name of every vessel is recorded by the ‘Leger of the Deep’, a close personal friend of Neptune, God of the Sea.
To fail to notify Neptune of a change in the ship’s name will invoke his wrath, so all traces of the boat’s previous name must be removed, not just from the vessel herself, but from documents, badges and receipts.
A second ceremony must then be carried out to rechristen the ship.