Heigth of the tower, Focal plane elevation

Started by Bergwind, September 20, 2022, 06:03:08 AM

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Bergwind

Lighthouse Directory from Russ Rowlett is very useful for all of us lighthouse lovers. But often I see great differences for height of the tower and focal plane elevation from Open Sea Map.
For instance: Roscoff ! A1812.1 Russ: 24 and 24, Open Sea : 15 and 24 (seems realistic )
Or the beacons in sea: A1818, Russ :20 and 14, Open Sea : 8 and 14 (seems realistic ) and so on...

mitko

Agreed! It seems this could be different datums...
Best regards,
Dmitry

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