NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Cross-tide strategy (was: DR plotting techniques)
From: Philip Ouvry
Date: 2003 Oct 25, 22:22 +0200
From: Philip Ouvry
Date: 2003 Oct 25, 22:22 +0200
When instructing I would pose the following problem to my students. You are in a boat capable of 4 knots intending to cross a wide river. Your destination is straight across the river. In the centre of the river the current runs at 7 knots but close inshore on either side it reduces to 2 knots. What should be your strategy for crossing the river? My strategy was to cross the river at right angles until close inshore on the far side and then proceed against the current (2 knots) to reach the destination. Is there any other strategy? Philip Ouvry
