Royal yacht: Why Britannia will definitely cost more than £200m to build

Boris Johnson has confirmed that there is to be a replacement for the Royal Yacht Britannia using new green technology.

The surprise announcement came in a statement from 10 Downing Street at the end of May. Rather than purely serving the British Royal Family, however, this new vessel will be a national ship rather than a private yacht – a floating embassy that will be operated by the Royal Navy.

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