U-CAT robotic sea turtle set to explore shipwrecks
By Ben Coxworth
November 26, 2013
When was the last time you heard about a sea turtle getting stuck in a shipwreck? Never, that's when. Although that's partly because stuck turtles rarely make the news, it's also due to the fact that they're relatively small and highly maneuverable. With that in mind, the European Union-funded ARROWS project has created U-CAT – a prototype robotic sunken-ship-exploring sea turtle.
Just like a real turtle, U-CAT has four independently-driven flippers that allow it to move up and down, forward and backward, and to pivot on the spot. Propellers would let it do those same things, although they'd also churn up much more visibility-limiting silt in the process.
U-CAT is autonomous, so it doesn't require a control cable that could get snagged or tangled. It also has an onboard video camera, which records video that can later be used to visually map out the inside of the shipwreck.
Plans call for the technology to be tested at underwater archeological sites in the Mediterranean Sea and the Baltic Sea. The idea is that U-CATs could ultimately be used in conjunction with other underwater robots that are too large to enter wrecks, and too expensive to risk losing within them.
Once they get into regular service, U-CATs might not be the only robotic turtles in the sea. Scientists from the ETH Zurich research group are developing a roboturtle of their own, known as naro-tartaruga.
The U-CAT prototype can be seen in action in the video below. If you're interested in seeing it first-hand, its public premier will be taking place this weekend at the London Science Museum's Robot Safari exhibit.
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