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A comment on Manta Ray Uncrewed Underwater Vehicle Prototype Completes In-Water Testing. Parent comment

Re:Manta Ray Uncrewed Underwater Vehicle Prototype Completes... by hamandchris on Friday May 03, 2024 @11:43AM (#40248975)
Something about this? “Once deployed, the vehicle uses efficient, buoyancy-driven gliding to move through the water..."

Sounds like it gets around by changing buoyancy, which is pretty cool and also probably completely silent.

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Re:Manta Ray Uncrewed Underwater Vehicle Prototype Completes... by zardo on Friday May 03, 2024 @11:53AM (#40249085)
The real benefit is it works well with harvesting energy for propulsion from the depth based thermal gradient.
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Re:Manta Ray Uncrewed Underwater Vehicle Prototype Completes... by causal on Friday May 03, 2024 @11:51AM (#40249057)
It's still much wider-bodied than any glider I've seen. I'm guessing this is because of the need for larger payload bays.
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Re:Manta Ray Uncrewed Underwater Vehicle Prototype Completes... by ryanisnan on Friday May 03, 2024 @12:40PM (#40249603)
The answer is probably explosives, but are there other payloads you think this thing might carry?

Comms? SIG-INT equipment?

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Re:Manta Ray Uncrewed Underwater Vehicle Prototype Completes... by causal on Friday May 03, 2024 @02:27PM (#40250723)
Given the autonomous nature I'd be surprised if it were used offensively anytime soon, so I'd guess the latter.
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Re:Manta Ray Uncrewed Underwater Vehicle Prototype Completes... by marcosdumay on Friday May 03, 2024 @02:00PM (#40250455)
You don't need as much wing-area underwater as you need on the air.
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