Milton Waddams wrote in
:


Can you explain set and drift? Thank you.

Milton

BTW thanks to everyone for their generous help on all my questions.

Basically, as Jeff said, leeway involves wind, whereas "set and drift"
involve current.
Problem is, many people now include an either/or factor when using
either/or, phrase/term.
At any rate, for current...... in some cases you can get a good visual
quesstimate of what the true current is doing in both direction and speed
but you'll rarely get any idea as to it's relative affects until after the
fact....I'd say apply true.
For wind, you may be able to get a better read of relative (anemometer)
than true..... kinda.... use whichever one you feel most comfortable with
at a given time.

Like so many aspects, it's hard to say "This is better than That"