What is the preferred type of descent line for diving?

The preferred type of descent line for diving is typically a 3-inch double-braid line due to its combination of strength, flexibility, and ease of handling. A double-braid construction offers a durable outer sheath that protects against abrasion while providing a strong inner core that can support heavy loads without compromising safety. This type of line is also less likely to tangle compared to other materials, which is crucial in underwater conditions where visibility and maneuverability may be limited.

Additionally, a double-braid line tends to have a better grip, allowing divers to maintain control when descending or ascending. The flexible nature of the line makes it suitable for the varying conditions encountered in diving environments, including changes in temperature and exposure to saltwater. These properties contribute to the overall safety and effectiveness of the line during underwater rescue or exploration operations.