The UK's Safehaven Marine makes specialty watercraft for SAR (search and rescue) and military applications, and their latest design is like something out of a spy movie: The XSV 17 Thunder Child, kitted out with stealth technology that makes it nearly invisible on radar, night vision camera systems, HyperSpike acoustic devices that you blast to deter opponents, a gyroscopically-stabilized remote controlled 12.7mm machine gun that pops up out of watertight hatches, two 1,000-horsepower Caterpillar engines and ROSY.
ROSY (a nickname for Rapid Obscuring System) works like this:
That video above was a demonstration of ROSY, not the actual Thunder Child. She looks like this:
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In the video below she demonstrates her special trick--an inability to remain capsized, should she turn over in rough waters:
The boat's prow is designed to cut through waves taken head-on, to minimize slamming up and down in rough water. For both that and the uncapsizing trick, the crew sit in shock-mitigating seating designed with built-in suspension systems:
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But one thing they can't do, I'm guessing, is prevent me from vomiting every time the boat goes over.