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I have had  "We The Navigators" on my bookshelf for many years and it
is a very intresting discription of the navigational techniques used
by ancient pacific voyagers.

http://www.amazon.com/gp/reader/0824815823/ref=sib_dp_pt/105-6149226-0956425#reader-link

gl

On Oct 31, 12:33 pm, Winchurch  wrote:
> A more up-to date discussion of the methods of Micronesian navigation
> can be found in a recent book (1987) by Steve Thomas.  Thomas sailed
> with one of the few remaining practitioner's of the ancient methods.
> Thomas comes with notable sailing credentials and his account provides
> some useful insights.
>
> Dick
>
> Michael Daly wrote:
> > Clive wrote:
>
> >> How do you find its direction and how do you deduce that its direction is
> >> unexpected and therefore of navigable interest ?
>
> > Very good point and I'm guilty of not thinking critically about this
> > info.  Most of my experience with currents is in inland waters where
> > they can be quite visible (like a line of bubbles between two slightly
> > different coloured areas of water) as in two big rivers meeting or a
> > river flowing into a large lake.
>
> > On the ocean, you'd be swept along with it and, out of sight of land as
> > you say, there's no point of reference.  I suppose the only means of
> > detecting the current is if it regularly swept along flotsam (of the
> > natural kind) and it could be identified from a distance as one
> > approached.  Knowing nothing of Pacific currents, I can't say there's
> > any location where this wild hypothesis is possible.
>
> >> It is conceivable the pacific islanders navigated over long distances,
> >> although I remain unconvinced that they did so with any prepared passage
> >> plan, but principally I argue that it would be impossible to navigate using
> >> this method.
>
> > If they ran regular trade routes, I can see it possible to do the
> > planning.  However, your contention that using currents is not feasible
> > is valid until I or someone can identify a legitimate way to do it.
>
> > Mike


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