NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Dip uncertainty
From: Alexandre Eremenko
Date: 2004 Dec 7, 13:29 -0500
From: Alexandre Eremenko
Date: 2004 Dec 7, 13:29 -0500
Trevor: > The position that Bruce and I have been > supporting > is that anomalous dip is usually less pronounced for an observer on the > bridge of a modern ship or in the top of a sailing ship than for one > located near the waterline or aboard a small yacht. The opinions seem to be split on this subject, and I don't see how to settle it without experimental data on the anomalous refraction. If the whole "anomalous part" of the anomalous refraction happens within few meters from the sea surface, then you and Bruce are right. Surely someone studied this question, but I don't know how to find these results. Alex.
