This thing has a 2km long fibre optic tether and is battery powered. Been in use... | Hacker News

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		willyt on July 4, 2018 \| parent \| context \| favorite \| on: British divers make contact with missing Thai foot... This thing has a 2km long fibre optic tether and is battery powered. Been in use since 2001. https://en.wikipedia.org/wiki/Seafox_drone

robotresearcher on July 6, 2018 [–]

Cool. But that vehicle is open underwater only. These caves are a mixture of swimming, walking and climbing. Lots of power required, and very tough to teleoperate.

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