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https://en.m.wikipedia.org/wiki/Narco-submarine https://en.m.wikipedia.org/wiki/Narco-submarine >The number of narcosubs—boats modified to minimize their profi
by hoppyhoppy2 5y ago
https://en.m.wikipedia.org/wiki/Narco-submarine https://en.m.wikipedia.org/wiki/Narco-submarine
>The number of narcosubs—boats modified to minimize their profile while shuttling drugs, has exploded nearly tenfold in the past decade.
https://www.yahoo.com/news/why-seas-suddenly-swimming-drug-223400474.html https://www.yahoo.com/news/why-seas-suddenly-swimming-drug-2...
- CamperBob2 5y agoThose are crewed, or occasionally towed behind a normal boat. It should be relatively straightforward at this point to build a sub that can navigate entirely by itself.
- sokoloff 5y agoGPS doesn’t work underwater. Almost all the drone tech navigates by GPS; converting over to an inertial nav system and making that reliable for autonomous underwater operation is a good bit more than “relatively straightforward” I think.
- smiley1437 5y agoNarcosubs are typically just barely sub-surface, they don't operate deep like navy subs. The portion above water is designed to be low enough to be hidden by waves but is still above the surface so using GPS wouldn't be an issue.
- Gustomaximus 5y agoI'd assume narcos have fully submersible subs, just those ones don't get caught.
- jet_32951 5y agoEasily done via small IMUs with aiding from GPS using a surface-tethered antenna.
- dragonwriter 5y ago> GPS doesn’t work underwater. Neither do most narco“subs”, which are mostly semi-submersible.
- echelon 5y agoA waterproof mast could hold a GPS receiver above the water. Or the submersible could surface occasionally to sample its location and bearing. If it kept to a low profile, it wouldn't even matter if it was slightly above water.