Anchor Scope

What it does

• Scope is a ratio, and the ratio changes with the expected load.
• The card gives scope in metres for the depth you are actually in.
• A second column covers an overnight with a wind shift forecast.

How to use it

1. Measure depth at the anchor position, not at the stern.
2. Add freeboard before applying the ratio; it is part of the catenary.
3. Note the swinging circle before choosing the spot.
4. Record the scope used so the next anchoring in the same bay is faster.

Safety notes

• A ratio is a starting point; holding depends on the seabed.
• Set an anchor alarm and a transit before leaving the boat.