The Garmin GDL 30 (weather receiver) and GDL 30A (weather receiver and satellite radio) can overlay a smorgasbord of weather data.

For several decades, the majority of small boat mariners received weather information near shore through their marine VHF radios. Though useful, the information is limited to audio reports on local wind and sea conditions, local marine forecasts, and hurricane, or other severe weather advisories.

On larger vessels, single sideband (SSB) radios are frequently installed, sometimes with a weatherfax printer or PC-based weather program to enhance weather information gathering. The more comprehensive SSB/weatherfax systems are capable of providing long-range weather reports and graphical displays of weather maps printed directly from the onboard printer. …