When is it necessary to use a tending line during a dive?

Using a tending line during a dive is particularly crucial when there is no access to the surface. A tending line serves as a safety measure that allows divers to maintain a connection to their surface support team. It can be particularly beneficial in situations where visibility is poor, currents are strong, or in environments that make it difficult for divers to navigate back to the surface independently.

When access to the surface is not readily available, the tendency to become disoriented or lose track of the ascent route increases, which can elevate the risk of an underwater incident. The line provides a lifeline that can guide divers safely back to the surface, ensuring that they have a reliable means of navigation and assistance during the dive. All these factors underscore the importance of a tending line in enhancing diver safety in critical conditions.