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Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by allanrbo on Friday March 20, 2026 @08:15PM (#47462629)
Screenshot or bust
Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by FormerLabFred on Saturday March 21, 2026 @01:51AM (#47464345)
Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by dark-star on Friday March 20, 2026 @07:33PM (#47462296)
Tried it. Doesn't work. Does not show any vessels for me, list (and map) stays empty, console is full of "WS closed: no close frame received or sent. Reconnecting in 10s"

HN hug of death?

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by FormerLabFred on Friday March 20, 2026 @07:38PM (#47462335)
You got an aisstream.io key and set it before launching? Check the README.You can hard code it in shadow_tracker.py too

Bedtime in Sweden. Back tomorrow if you need support.

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by dark-star on Friday March 20, 2026 @07:41PM (#47462360)
yeah, seemed I had an error in that key, it cut off 2 characters at the end. Works fine now, thanks!
Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by FormerLabFred on Saturday March 21, 2026 @01:30AM (#47464241)
Good!

Tried to do onboarding guide as proper as possible with the scripts and for different OSs. Many OSINT hobbyists/enthusiasts out there, but not all of them are familiar with installing dependencies/launching Python etc

It takes a few 3 min runs to render/populate the map.

Happy tracking!

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by dylan604 on Saturday March 21, 2026 @12:21AM (#47463958)
Feels like that could be the point of the site. It's a shadow fleet where the ships are trying to stay hidden from tracking. That would be a great site.

Kind of like my favorite book on my self title "Everything I Know About Women". It's a hard cover book with hundreds of pages. Every one of them is blank.

I guess I find dumb things funny

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by FormerLabFred on Saturday March 21, 2026 @05:16AM (#47465430)
:)

A hybrid war going on in the Baltic region. Women involved too

We have been running the main system a year. Loads of data, less women

Now there is this light version for the hobbyists, onboarding tricky for some users, but README covers it all

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by Krasnol on Friday March 20, 2026 @07:06PM (#47462007)
It would look nice on a Home Assistant dashboard
Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by FormerLabFred on Friday March 20, 2026 @07:13PM (#47462088)
Whatever you got :)

Siri, NORA IMO 9259408, give me position, knots, and heading

Later versions

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by deepsun on Saturday March 21, 2026 @01:06AM (#47464137)
AIS is the first thing nefarious vessels turn off when they do nefarious things. Or set it to show 100-1000 km off, AIS protocol is easy.
Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by londons_explore on Saturday March 21, 2026 @11:06AM (#47467708)
One could combine it with satellite imagery and flag up anything where the ais data and satellite imagery doesn't show a ship in that place.

Ships are big enough that even low Res imagery ought to be able to see them in daylight.

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by FormerLabFred on Saturday March 21, 2026 @11:48AM (#47468088)
Yes this can be a true intelligence tool, combining many sources
Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by deepsun on Saturday March 21, 2026 @08:15PM (#47472979)
I was commenting on the link posted.

"Could be" of course many things better. The webmasters could launch their own satellites.

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by dawnerd on Saturday March 21, 2026 @01:28AM (#47464236)
Seems a bit deceptive to say "No cloud, no subscription, runs locally" when it still needs an api.
Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by FormerLabFred on Saturday March 21, 2026 @01:35AM (#47464275)
From head of README

“ Free, open source, runs locally. No cloud, no subscription beyond a free AISStream API key.”

I mean we don’t have the vessels floating around live locally inside machine :) Gotta get the AIS messages from somewhere

Re:Show HN: Baltic shadow fleet tracker – live AIS, cable pr... by FormerLabFred on Saturday March 21, 2026 @01:37AM (#47464290)
And the webserver is running locally, this is not web based, that’s the no cloud part