What is the recommended maximum current limit for scuba diving?

The recommended maximum current limit for scuba diving is generally considered to be 1 knot. This guideline is set to ensure divers' safety, as stronger currents can significantly increase the risk of accidents and exert more physical strain on divers. When currents exceed this limit, it becomes increasingly challenging for divers to maintain control, affect their buoyancy, and safely navigate to their intended destinations. It is particularly important during ascent and descent, where a diver can be swept away from their intended path or may struggle to return to the surface safely. Understanding and adhering to this limit helps ensure that divers can manage their energy levels, breathe appropriately, and respond effectively in potentially hazardous conditions.

In contrast, while currents at 2 knots and above can be manageable with the appropriate experience and conditions, they present greater risks and challenges that many divers may not be prepared for. Half a knot, on the other hand, is generally considered a safe and manageable current, but it does not represent the recommended maximum for dynamic diving situations. Therefore, the guideline of 1 knot serves as a prudent safety boundary for underwater activities.