3 ms·

This is pretty amazing to watch! I did just watch a dot go through the Great Lakes, to Chicago, then take to the air and make a bee line straight to the Gulf o

This is pretty amazing to watch! I did just watch a dot go through the Great Lakes, to Chicago, then take to the air and make a bee line straight to the Gulf of Mexico. Probably some weird artifact but made me chuckle.

skeeter2020 9mo ago
kind of neat, but major problems with accuracy. I'm watching a signficant volume of traffic navigating the mountain ranges of northern BC, the Yukon and Alaska. I think something is messed with the browser rendering based on zoome level, and the map interactions.
deleted 9mo ago
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onionisafruit 9mo ago
I saw a few take a straight line across Africa from the west coast to the mediterranean.
tastyfreeze 9mo ago
That could be malfunctioning hardware, turned off AIS, or a gap in recording. Smaller deviations from a line are most likely GPS jitter. AIS is transmitted over VHF. Terrestrial stations listen for the transmitted AIS messages to record them for public consumption. Source: I collect AIS data over TCP/IP directly from my orgs ships.
- itnerd 9mo ago
  Any details on your AIS setup, or links to a similar configuration?
  - tastyfreeze 9mo ago
    A contractor manages bridge hardware so I am missing details. They set it up. I troubleshoot and use the data. AIS is connected to a serial-to-ethernet converter. That allows me to get the AIS stream over TCP/IP. I wrote an application to consume AIS and do what they wanted with it. The serial-to-ethernet converters are the magic ingredient. It allowed us to have tracking and telemetry regardless of terrestrial VHF stations in the area. The original setup also provided a feed from Transas but we stopped using it. We also use a private AIS VHF recorder as a backup source of AIS messages. We used that a lot more before Starlink due to terrestrial blockage of VSAT links. The backup source was a good compliment to the primary. They had the most infra in areas that were blocked most often.
pests 9mo ago
That is a real route though - The Great Loop, although I'm sure tankers aren't taking it. https://en.wikipedia.org/wiki/Great_Loop https://en.wikipedia.org/wiki/Great_Loop > Assuming a boat ("Looper") begins in Chicago, either take the Chicago River and Chicago Sanitary and Ship Canal, or the Cal-Sag Channel to the Des Plaines River. The waterway passes Joliet and soon becomes the Illinois River. The Illinois River travels west, through several locks, then southward, through Peoria. At Grafton, Illinois, the Illinois River joins the Mississippi River. Of course you could start in the some Great Lake or the Erie Canal or anywhere else on the east coast.
- deleted 9mo ago
  [deleted]

skeeter2020 9mo ago

kind of neat, but major problems with accuracy. I'm watching a signficant volume of traffic navigating the mountain ranges of northern BC, the Yukon and Alaska. I think something is messed with the browser rendering based on zoome level, and the map interactions.

deleted 9mo ago

[deleted]

onionisafruit 9mo ago

I saw a few take a straight line across Africa from the west coast to the mediterranean.

tastyfreeze 9mo ago

That could be malfunctioning hardware, turned off AIS, or a gap in recording. Smaller deviations from a line are most likely GPS jitter. AIS is transmitted over VHF. Terrestrial stations listen for the transmitted AIS messages to record them for public consumption. Source: I collect AIS data over TCP/IP directly from my orgs ships.

itnerd 9mo ago
Any details on your AIS setup, or links to a similar configuration?
- tastyfreeze 9mo ago
  A contractor manages bridge hardware so I am missing details. They set it up. I troubleshoot and use the data. AIS is connected to a serial-to-ethernet converter. That allows me to get the AIS stream over TCP/IP. I wrote an application to consume AIS and do what they wanted with it. The serial-to-ethernet converters are the magic ingredient. It allowed us to have tracking and telemetry regardless of terrestrial VHF stations in the area. The original setup also provided a feed from Transas but we stopped using it. We also use a private AIS VHF recorder as a backup source of AIS messages. We used that a lot more before Starlink due to terrestrial blockage of VSAT links. The backup source was a good compliment to the primary. They had the most infra in areas that were blocked most often.

pests 9mo ago

That is a real route though - The Great Loop, although I'm sure tankers aren't taking it. https://en.wikipedia.org/wiki/Great_Loop https://en.wikipedia.org/wiki/Great_Loop > Assuming a boat ("Looper") begins in Chicago, either take the Chicago River and Chicago Sanitary and Ship Canal, or the Cal-Sag Channel to the Des Plaines River. The waterway passes Joliet and soon becomes the Illinois River. The Illinois River travels west, through several locks, then southward, through Peoria. At Grafton, Illinois, the Illinois River joins the Mississippi River. Of course you could start in the some Great Lake or the Erie Canal or anywhere else on the east coast.

deleted 9mo ago
[deleted]