On Wed, 19 Sep 2007 04:57:26 GMT, Evan Gatehouse
wrote:

There is no such thing as "Shipping Routes". Modern weather routing
for big ships mean that you'll find them all over the ocean as ships
avoid weather systems, or hitch on to ones with following winds.
Ships leaving from the same port 2 days apart will follow quite
different routes due to this reason.

Interesting, definitely makes sense when you think about it.