What length of trail line is recommended for a dive from an anchored boat?

• A. 15 meters
• B. 50 meters
• C. 30 meters
• D. 100 meters

Answer: (C)

Using a trail line from an anchored boat provides a controlled connection between the divers and the boat, helping everyone stay oriented and ensuring a safe, easy return in currents or low visibility. The line should be long enough to let divers move away a reasonable distance from the boat and explore, but short enough to be easily managed by the surface crew and to prevent the line from fouling on the hull, moorings, or gear. If the line is too short, divers have less room to maneuver and the return path becomes cramped; if it’s too long, it becomes unwieldy, harder to control, and more prone to tangling or snagging in equipment or the boat’s attachments. The recommended length strikes a practical balance, giving divers sufficient freedom while keeping retrieval straightforward and safe.