this post was submitted on 17 Nov 2025
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xkcd #3169: EPIRBs

Title text:

'Oh no, the box is drifting out into the harbor!' 'Yeah, I wouldn't worry about losing it.'

Transcript:

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Source: https://xkcd.com/3169/

explainxkcd for #3169

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[–] saltesc@lemmy.world 20 points 1 month ago (1 children)

I have a handheld one—to float with me in a liferaft, etc—and it gets registered to a vessel or vehicle. Whenever I want to use it on something different, contact the federal government, advise of the new vessel ID or vehicle registration, and it's now associated with the new one.

I don't think it matters much since it is a beacon after all, but I think it helps in searching. Also, a lot of other details are registered along with it so they know who to send the tens of thousands in fines to if I somehow bypass all three "Are you really sure?" switches and fire the thing off inappropriately.

[–] neidu3@sh.itjust.works 6 points 1 month ago* (last edited 1 month ago) (1 children)

Any chance what you have is not an EPIRB, but a SART? SARTs are only registered with beacon ID and doesn't require programming. Shows up on radar and sometimes AIS also. No sat comms involved.

[–] saltesc@lemmy.world 4 points 1 month ago

Registration Status: Registered.
Beacon Type: EPIRB.
406MHz GPS (Cat. 2) 66-channel. Beacon Status: Operational.
Battery Expiry Date: 01/10/2028.

It's UIN—which I obv won't give lol— doesn't hold an MMSI. The main reason being EPIRBs aren't just for marine craft.