There’s not exactly a magic number. Determine the best boating speed by taking the following factors into account:
How Far You Can See. Glare, fog, smoke, and other conditions can prevent you from seeing what lies ahead. As visibility decreases, so should speed.
The number of Nearby Boaters. Cautious skippers don’t speed through a densely populated lake on the Fourth of July.
The Current. This directional flow of water affects boats. As currents change, they can have an even bigger impact.
Weather. Wind is a major element to watch out for when determining boating speed.
Your Ability to Handle the Boat. Experienced sailors know what to expect. Size matters too. It can take more skill to maneuver a yacht than a tender.