The Royal Navy's newest aircraft carrier HMS Queen Elizabeth departs Portmouth dockyard on Oct. 30, 2017 in Portsmouth, England.

A picture shows the commissioning cake with figures and scenes on it made by David Duncan for the Commissioning Ceremony to be attended by Britain's Queen Elizabeth II and Britain's Princess Anne, Princess Royal, to official commission the Royal Navy aircraft carrier HMS Queen Elizabeth at HM Naval Base in Portsmouth, southern England on December 7, 2017. Her Majesty The Queen, accompanied by Her Royal Highness The Princess Royal, attended the Commissioning Ceremony of the aircraft carrier HMS Queen Elizabeth, the largest warship ever built for the Royal Navy. Following the traditions of the Royal Navy, during the course of the ceremony the commissioning cake will be cut by the Captain's wife and the youngest member of the Ship's Company.