What safety ratio is required when tethering a rescue swimmer to shore?

The required safety ratio when tethering a rescue swimmer to shore is one to one. This means that for every unit of length of the tether, there is an equivalent length of tethered connection to ensure maximum safety and effective retrieval of the swimmer. A one-to-one ratio facilitates a straightforward and direct connection, minimizing slack in the tether that could lead to complications during rescue operations.

In terms of rescue procedures, the tether must offer enough strength to support the swimmer while also allowing for maneuverability and swift response times in emergencies. A tighter ratio helps maintain control over the rescue swimmer, ensuring they can be effectively monitored and assisted without the risk of excessive distance that could jeopardize safety.