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Very cool Twitter feed! Would you consider adding a second account that doesn't include cargo/tanker ships so I can follow and turn on notifications?
by mike_d 7y ago
Very cool Twitter feed! Would you consider adding a second account that doesn't include cargo/tanker ships so I can follow and turn on notifications?
- wpietri 7y agoInteresting! Which kinds of ships do you want, then? Just cruise ships? Tell me a bit more about why you'd want to be notified about them.
- mike_d 7y agoMilitary, search and rescue, police boats, cable layers, fire boats, icebreakers, etc. The sort where I could subscribe to notifications and get a few messages a day and go "huh, that is cool".
- wpietri 7y agoThe trouble here is that AIS is a pretty blunt instrument as far as ship classification goes. If you go here and scroll down to Table 11, you'll see what they transmit: https://gpsd.gitlab.io/gpsd/AIVDM.html#_type_5_static_and_voyage_related_data https://gpsd.gitlab.io/gpsd/AIVDM.html#_type_5_static_and_vo... Ships like you describe are also often weirder with what they transmit. Cargo and cruise ships go from known port to known port in reasonably predictable ways. (Reasonably predictable meaning that 50 or so regexes can usually extract a little sense from what some sailor types into a bridge console.) But a lot of data from smaller, less predictable ships is much less regular. Now that it has been running a while, I should definitely go back and see what else I can extract from the data. But one of my problems is that this stuff is poorly documented. What I really need is connections to maritime experts who can look at the data and say, "Oh, that ship is..."