"Wally" wrote in message ...
Joe wrote:
If you want to sail a course of 080, at a speed of 10 knots and you
sail thru a current having an estimated set of 140 and a drift of two
knots
What would be your course and speed made good?.

089,

exactly

11.14 knots.

..6 knots off, but close this aint horseshoes.


If you want to sail a course of 095 through a current having a set of
170 and a drift of 2.5 knots, using a speed of 12 knots
What would be your course and speed made good?.

106, 12.88 knots.

correct on the course. Still just a bit off on the speed.

What course should you have steered to get a cog of 095?


You want to sail a course of 265 and a speed of 15 knots through a
current having a set of 185 and a drift of 3 knots
What would be your course and speed made good?.

254,

Good, what course should you have steered to make a COG of 265?

15.8 knots.

One knot off.

Hell of alot better than Jax.

Joe

Hell of alot better than Jax.

Joe


yup, joe, you sure are one incredible alchemist. you can perform precision
math on guesses and turn them into precision guesses. I am impressed.

(JAXAshby) wrote in message ...
Hell of alot better than Jax.

Joe


yup, joe, you sure are one incredible alchemist. you can perform precision
math on guesses and turn them into precision guesses. I am impressed.

The question said the exact set and drift. They were not guesses at
all they were given.

And you can include leeway if needed.

It sure beats the hell out of a totally un-educated guess.


Joe