Next message: Richard: "Re: Cross-tide strategy (was: DR plotting techniques)"
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
