The New Jersey coastline has changed significantly. Help Remap the Northeast and Support Hurricane Sandy Recovery July 19, 20, 21 2013. Navionics will donate $1 per mile of sonar logs to benefit the Marine Trades Association of New Jersey Hurricane Sandy Recovery & Relief Fund. How to help: Humminbird and Garmin users can record sonar logs, then upload them to the Navionics webstore. Updated charts, reflecting everyone’s contributions to SonarCharts™ and Community Edits, can be downloaded after about one week. Visit navionics.com/sandy for instructions and more details. I can be contacted at [email protected]