NB: dovetail joint for curving prow
This wooden prehistoric boat, discovered in September 1992, is thought to be some 3,000 years old. The boat's excavation was an internationally important archaeological discovery. After seven years of research and conservation, the Dover Boat is back in Dover and proudly on display at the Dover Museum. [source DOVER BRONZE AGE BOAT]
In the following Time Team special, they talk a lot about La Manche (aka the English Channel) being a connection between trading worlds not a barrier between England (Dover) and France (Calais). They mention the Rhein trade route. They mention a link to Spain. But they're loathe to navigate the Pillars of Hercules and discuss the Mediterranean where Enormous War Boats had dominated the bronze-age Trojan/Syrian sea conflicts for centuries.
The (dark skinned, curly haired) Britons that Caesar confronted in AD50 might not be British at all... these bronze-age peoples of the British Isles might indeed have built boats that could get them all the way to what we later called America. If a suitable boat can cross one stretch of sea, etc... Are we a race of People who are not from this Country, or this Locality? A race of Mediterranean war-mongering sea-farers, maybe? All speaking a common Bronze Age language, like Khumric, perhaps? Are our ancestors Mediterranean Pirates or remnants of these ancient Trojan Wars and their expelled Kings?