I want to confirm Dick Mills's article from the Spring 2011 Windblown, that the Droid smartphone with Navionics is a great alternative to chartplotters. My commitment was up on my wife's Verizon phone, and I was just at the point of considering what model to get next, Dick's article convinced me to get a Casio Gzone ruggedized Droid smartphone, and to install the inexpensive (<$20) Navionics app on it. After a several days of cruising the Georgia ICW, I love my Droid! Only thing is I have to ask her to let me use it--she loves the Droid game apps ;-(