When is a small craft advisory issued?

A small craft advisory is typically issued when winds are expected to reach sustained speeds of 20 knots or more. This advisory serves as a warning to small boat operators and recreational sailors, helping them to understand that the conditions could be challenging or dangerous for vessels that are not designed to withstand such wind speeds.

In this case, the correct choice aligns with the common guidelines used by the National Weather Service and other maritime authorities, emphasizing the safety of navigation in small craft under increasing wind conditions. The advisory is intended to alert sailors to the potential for hazardous conditions on the water, allowing them to take precautionary measures, such as remaining in port or avoiding open waters where conditions may become more severe.