Mark and Diana Doyle are authors of the popular cruising guide and electronic charting series, Managing the Waterway. For the holiday's they are offering a 20% discount "voucher". I'm not related to them in any way... just a happy customer. If you are interested in their products, check out their offer below and head over to their website to order. Offer ends 12/31/2008.

Simply cut-and-paste the following 20% off voucher code on the order page when prompted:

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