In mooring practice, what does the term scope refer to?

• A. The distance from the bow to the anchor
• B. The weight of the anchor
• C. The ratio of line length to water depth
• D. The time needed to secure the mooring

Answer: (C)

Scope is the ratio of how much line you let out to how deep the water is. It describes how long the line (rode) is relative to the water depth, for example paying out 100 feet of line in 20 feet of water gives a scope of 5:1. Why this matters: a larger scope lets the boat swing on a longer lever arm and reduces the pull on the anchor, helping the anchor set better and increasing holding power in wind, current, or waves. It’s not about the distance from bow to anchor, the weight of the anchor, or the time to secure the mooring.