More than 17,000 total lake maps with complete fishing information for your GPS, plus over 1,000 high-definition lake maps featuring exclusive 1' contours from Navionics own on-the-water surveys.
Choose from 5 huge regions throughout the US and Canada on a media card compatible with your chartplotter. CF and MicroSD media cards are pre-programmed and ready to use with today's leading chartplotters… just plug-and-play!
The West Advisor
The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.