NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Prop-walk.
From: Rodney Myrvaagnes
Date: 2003 Apr 23, 09:23 -0500
From: Rodney Myrvaagnes
Date: 2003 Apr 23, 09:23 -0500
On Wed, 23 Apr 2003 13:37:18 +0100, Aubrey O'Callaghan wrote: > >This would imply that if the prop is sufficiently deep then there would be >no prop walk, the question is how deep ? >As an extreme test of this, do submarines suffer from prop walk when >operating below the surface ? > This is a point I neglected in my comparison of the J36 and the Cal 2-30. The prop is below the deepest part of the hull on the J, as well as being forward. However, the hull bottom is as close to the prop as it can be. Aubrey's suggestion could be tested with a finless submarine :-). Another related matter. Does anyone know if a single-screw tug with a Kort nozzle surrounding the prop has any walk? Rodney Myrvaagnes NYC J36 Gjo/a The sound of a Great Blue Heron's wingbeats going by your head
