What test can help detect a fuel leak after refueling a gasoline-powered boat?

The sniff test is an effective method for detecting a fuel leak after refueling a gasoline-powered boat. This test involves using your sense of smell to identify the presence of gasoline fumes. Since gasoline has a distinct odor, a strong smell around the fuel system may indicate a leak.

In the context of boating safety, being vigilant for fuel leaks is crucial, as they can pose serious fire hazards or environmental concerns. If the sniff test reveals an odor of gasoline, it's essential to conduct further inspections to pinpoint the exact source of the leak and address it immediately to ensure safety on the water.

Other tests, such as pressure tests and water tests, have different applications and may not be as effective for detecting fuel vapors specifically. Visibility tests do not apply in this context, as they generally focus on visual inspection rather than utilizing sensory observation for leak detection.