NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Theoretical Question - Height of Eye from Shore
From: Bill B
Date: 2007 Nov 18, 01:44 -0500
From: Bill B
Date: 2007 Nov 18, 01:44 -0500
> OK. And if the incoming tide was arriving or departing "� la vitesse d'un > cheval au galop " (at the speed of a galloping horse) as it is said to do at, > for example, Mont St Michel, then that would complicate such calculations even > more ... As stated a while back, I am preoccupied dealing with and aged mother. I am speed reading so may have missed the point. What does known elevation on land vs tide vs dip have to do with anything? Place your feet at the waterline and determine your own height of eye. No waves, you have the figure to use for dip calculations. Swells or seas? Basics. Small craft, shoot from the top of a swell. Large ship, average peak to trough (adding in height of eye from waterline of course). For extra credit, what if your feet are planted on the beach and there are seas or swells? Bill --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---