
NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Tidal heights calculations...
From: Russell Sher
Date: 1999 Jul 08, 12:38 AM
From: Russell Sher
Date: 1999 Jul 08, 12:38 AM
A friends of mine recently did a nav. theory course in which she said the 'rule of twelfths' is no longer taught for tidal calculations. Instead, percentages are used. Has anybody heard of this? - Would that mean 10%, 15%, 25%, 25%, 25% 10% instead of 1,2, 3, 3, 2, 1 (in twelfths)? Regards Russell