Peter S/Y Anicula wrote:

Nav wrote:

Tide tables are hardly rocket science!




Well actually they are. Mankind does not yet posses the full knowledge
to produce exact tide predictions.


There's a world of difference between "exact" and coatal tide tables
accurate to 15 minutes. Most tables are still produced by measurement of
local harmonic constants not by modelling. The local constants if
correct will produce sufficient accuaracy for navigation purposes. That
is my poinmt, not that research into hydrographics is not sophisticated.


Cheers