this post was submitted on 20 Jun 2023
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Explain Like I'm Five

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(inspired by a question on reddit, I'll post a reply too)

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[–] [email protected] 2 points 1 year ago

A beacon should work as I described in a separate response. A buoy could work too, but the buoy a) would need to be designed to float up from 4 km and still be functional at the surface b) the sub doesn't necessarily know where it is below the ocean. GPS doesn't work down there!