3. Seven Up
Seven years is a lifetime in the face of accelerating technological innovation. Think of what's happened since 2011 in terms of tech innovation: the refinement of touchscreen MFDs, chirp sonar, side-scanning sonar, 3D sonar, auto-routing, auto-charting, solid-state radar, wireless connectivity, plug-and-play system integration and much more. So if your marine electronics are more than seven years old, it's time to upgrade.