Anchoring

Anchor Scope Calculator

Calculate a suitable anchor rode length from water depth, bow-roller height and your chosen scope ratio. Use it while preparing to anchor or checking how much chain or rope you can deploy in the available space.

i

Use the expected depth at the relevant state of tide, not only the depth shown when you arrive.

m
Use the expected depth at the relevant state of tide, not only the depth shown when you arrive.
i

Height of the rode's anchor point above the water surface.

m
Height of the rode's anchor point above the water surface.
i

Ratio between deployed rode and the vertical distance from bow roller to seabed.

Result

Calculated rode
30.0 m
Vertical distance
6.0 m
Selected scope
5.0:1
Approximate horizontal reach
29.4 m

Anchor to bow, assuming a straight rode; not the boat's full swinging radius.