SiriusXM Marine isn’t new. It’s been providing aviators and mariners weather for 10 years. Even better, improvements with the major navigation-electronics makers (Furuno, Garmin, Simrad, Raymarine) mean skippers don’t need to rely on day-old data they laboriously scrubbed from Rutgers, NOAA and other weather services the day before. Today, SiriusXM weather subscribers can access 27 different weather data overlays on navigation suites even while at sea. If that’s not enough to entice you to opt for the monthly service, this will: It can be updated to the minute and overlaid on your chart plotter.