What creates recirculating currents and turbulent waters that can swamp boats and drown boaters?

Recirculating currents and turbulent waters are typically created by a combination of factors, including strong winds, underwater topography, and the interaction of tidal flows with obstacles such as rocks or jetties. These conditions can lead to the formation of eddies and whirlpools, which can create unpredictable and hazardous water movements. When boats encounter these turbulent areas, they may experience sudden changes in water flow that can cause capsizing or swamping, posing a serious risk to the safety of boaters. Additionally, the lack of visibility in turbulent waters can hinder a boater's ability to navigate safely.