[Talk-GB] [talk-gb] Local authority boundaries in the Hebrides

[Edward Bainton]

Hi all

I've just seen that the boundary of Comhairle nan Eilean Sar ("Council of
the Western Isles"?) is a very odd shape:
https://www.openstreetmap.org/?mlat=57.5057&mlon=-7.3120#map=13/57.5056/-7.3121&layers=N

Is there a simple explanation? Is the local authority boundary line Mean
Low Water Springs, perhaps, and the OSM coastline is MHWS?

(I don't know if it's relevant, but Udal law
<https://en.wikipedia.org/wiki/Udal_law> in Orkney and Shetland law has
lowest astronomical tide as the limit of land ownership. Perhaps there's a
Norse influence here, too? But I'm guessing probably more prosaic.)

Thanks
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