On Mon, 24 May 2010 15:43:19 -0700 (PDT), "Capt.Bill"
wrote:

Anybody know a good source for used chart? Specifically Imray charts
of the Caribbean.

No but we have been primarily using the CMAP-NT chart chip for the
Caribbean and have been very happy with its accuracy and coverage
using a Furuno GPS/plotter. For backup I've been using Maptech BSB
charts on a laptop. They are reasonably good for most places but not
as accurate as the CMAP.