What is the minimum distance vessels must stay away from a diver-down flag?

The minimum distance vessels must stay away from a diver-down flag is 150 feet. This regulation is designed to ensure the safety of divers who may be submerged in the water. The diver-down flag signals to others in the vicinity that there are divers below, and maintaining this distance helps to protect them from potential accidents or injuries caused by passing boats.

By keeping a 150-foot distance, vessels reduce the risk of waves created by their movement disrupting the diver's position or causing them to surface suddenly in an unsafe manner. It also gives divers and their support crew ample space to operate safely. Following this guideline is essential for maritime safety practices and helps to foster a safe environment for both divers and boaters.