Now THIS is pretty dang cool. Green Boat Stuff sells a product by Green Marine Products called the Fuel Whistle. That’s a lot of green, but even if you’re not an ultra-liberal tree-hugger, you’ll appreciate what this product does.

Here’s how it works:

While the tank is being filled a ‘whistling’ sound is produced by the Fuel Whistle. The sound is loud enough to be heard from any point on the boat. It will be audible in a strong breeze or with any normal surrounding sounds. As the tank approaches full, the sound turns to a ‘warble’ and when completely full it immediately stops. This is the signal to stop the fueling process before any spill occurs.

I’d love to give it a try. I’m always trying to balance my desire to fill my tanks as full as possible with my dread of overfilling. It would be great to have some warning!