Can anyone tell me how far off the coast airspace stretches? I will be traveling from MIA-LHR and would like to know when I leave and enter respective airpace.

You will safely remain within the Earth’s atmosphere for the entire trip to Heathrow, no need to worry. :wink:

12 miles

lol, I hope so :laughing:

I thought that was only for vessels.

My experience is the ADIZ is at 25nm but I bet it can be much further.

Unless I’m reading too much into it, it seems that BHXUK1 was asking about when he leaves one control area and enters another (e.g. from domestic USA airspace to Gander control then Gander control to Shanwick control).

I tried searching for a map that shows the boundaries between the different ocean control areas and domestic areas but was not successful.

For an Atlantic oceanic map albeit a bit crude:


IN (uk)

Thanks. I saw something similar to what you posted.

I was thinking there would be more than two oceanic control areas between the northeastern USA/Canada and Europe but the graphic shows only two.

Here is another link to the North Atlantic Routes with some nice weather charts attached… … ather.html

I also found the North Atlantic Airspace operating procedures manual: … -bA3vgu4ew

It shows the same map as we saw before…

Edit: yes, I’m looking up how to use tiny url!!!

Just go to, enter the long URL, and then press “Make Tinyurl!”.

If you are using Firefox, you can download an add-on to do the same thing. Once you have it installed, right click on the page itself and select “Create TinyURL for this page”. The one I use is called TinyURL Creator and I think it is much more convenient to use than

The tiny links come out the same regardless of which one you use: using TinyURL Creator using

Thanks for the Firefox hint…I just installed it…

Nice map. Just a couple of thoughts:
The North Atlantic is controlled by New York, Santa Maria, Gander Reykjavik, Shanwick and Bodo with much of northern Canada also being non-radar.
Flights from the East Coast of North America to most of Europe will generally only talk to Gander and Shanwick. Miami to London may also hit NY and Santa Maria depending on the route. Europe to the west coast will usually go far enough north to hit Reykjavik’s airspace. Bodo is in Norway and controls the extreme Eastern Atlantic north of the UK and east of Iceland. Those are the control areas I know of, there may be other obscure ones.
It doesn’t show on the map but the divide between Gander and Shanwick is at 30 degrees west longitude.
There are quite a few more HF frequencies than are shown on the map.

John, bored in Saudi

Isn’t that redundant John? :wink:

Hmmm and here I always thought the rich Saudi’s were jet setting off to Geneva, Paris, NY…to spend $$$ at least that is what the royals who lived in DC did :wink: Try to look on the bright side you have more time to read and post in the forum :stuck_out_tongue: :wink:

LOL, at least we are going somewhere next week. Not Paris or Geneva, but Istanbul and Beirut. At least they both have a fairly descent local beer. The scenery is not bad either.8)

John, awake in Saudi

Do you still have to manually get oceanic clearances (on the vhf delivery freq) from Shanwick/Gander or are you data linked? I believe the modern kit allows datalink for position reports too without the need to monitor HF and selcal.

In (UK)

so, back to my oriinal question, how far off the coast airspace stretches?

National sovereignty normally extends for 12 miles offshore. There are greater areas recognized as exclusive fisheries zones and these normally extend for 200 miles.

There are exceptions to all of the above depending on the nation involved, but those are the areas recognized by the UN and international agreements.

Would it be safe to say that this corresponds to the ADIZ boundary that’s depicted on the sectionals or the Hi Enroute charts?