Carolyn Shearlock - Aqua Map

Jeffrey Siegel - Aqua Map's new anchor alarm addition

fleetwing.blogspot.com - Aqua Map Tips - Make the Charts Look the Way You Want

Panbo.com - Active Captain Community app support

Waterway Guide (Bob Sherer) - 14 iPad Navigation Apps Evaluated

ActiveCaptain - Aqua Map Tides & Currents