What is the purpose of anchor scope?

• A. To determine the speed of the vessel.
• B. To provide adequate holding power by carrying sufficient chain length relative to depth.
• C. To measure the depth of water.
• D. To chart the sea floor.

Answer: (B)

The purpose of anchor scope is to provide adequate holding power by carrying sufficient chain length relative to depth. When you let out more rode (the anchor line and chain), more chain sits on the seabed, adding weight and friction. This keeps the pull exerted on the anchor closer to horizontal and reduces the vertical lift that can pull the anchor out. The result is a stronger, more reliable hold, especially in wind, current, or changing depths.

You don’t use scope to determine your speed, measure water depth, or chart the sea floor—those are done by other tools and methods.