Here (and the UK I believe) it is the "lowest astromical tide". If you
think about it, that is the only sensible datum for a _sounding_!

Cheers MC

Jeff Morris wrote:

If you were going to take the time to look it up, you could have at least said how it is
defined.


"Donal" wrote in message
...

"Jeff Morris" jeffmo@NoSpam-sv-lokiDOTcom wrote in message
...

How old is that chart? All of my US charts from the recent past use MLLW

as the datum for

soundings. I even checked in my Chesapeake ChartKit to see if they were

different.

OK - Here's a quiz: What's the meaning of LLWLT?

Lower Low Water Large Tide.


Sounds similiar to LAT.


Regards


Donal
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