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Gloriana
is the first Royal barge built for over 250 years. However, her design and build used structures and techniques that have changed little since the clinker built (with the planks overlapping) long-boats of the Viking age and carries on a centuries-old tradition of Royal rowbarges on the Thames. Its similarity to the vessels in the famous Canaletto painting The River Thames with St. Paul’s Cathedral on Lord Mayor’s Day is immediately apparent. With an overall length of ninety-two feet Gloriana is bigger than her predecessors, which were typically between sixty and seventy-five feet. However, like them she carries eighteen oarsmen.
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http://www.glorianaqrb.org.uk/
https://en.wikipedia.org/wiki/Gloriana_(barge)
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