With all of the new improvements in GLONASS, Galileo, and the present GPS (GNSS), I can foresee a bunch of new instrumentation for boats. In addition to improved accuracy and reliability for navigation, how about an absolute compass? Then you can add really accurate digital attitude measurement. GPS based safety devices could alert you if someone falls overboard and easily direct the crew back to the MOB. Beats a floating flag on a pole any day.Then there is that killer app - the GPS based wireless fence.Only problem is all of those new acronyms to keep up with...