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:
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:
But one thing they can't do, I'm guessing, is prevent me from vomiting every time the boat goes over.
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Self righting is not new, been around for years. designed a self righting vessel back in the late 80's www.seaboats.net/16.9m-pilot-boat-xidp1407126.html A low CG is only part of the equation to self righting, you need to look at the cabin volume and treat it as the hull of the vessel when its upside down with a high CG, so it will re capsize its self and upright to the correct position. The exhaust systems are general designed with a very large muffler, that they operate upside down and water does not flow backwards due to a flap inside. Also the air intake system will have flaps which shut off once the vessel passes horizontal.
They might want to spring-load their exhaust covers. They're flapping wide open when inverted. In the calm conditions of this demonstration that's not aproblem I don't imagine. But in the rough conditions it would require to flip this boat, they might get some briney up the chute which the engines might not appreciate.
Self-righting. It can clearly capsize.
Great name with a fitting resemblance to its fictional predecessor. HMS Thunder Child was a torpedo ram ironclad in HG Wells’ ‘War of the Worlds’.
Razzmatazz is back baby!