Transport & Manufacturing
Anchor Rode Scope Ratio (Rope vs All-Chain 5:1 / 7:1) Sizer
Calculate anchor rode scope ratio (rope vs all-chain 5:1 / 7:1) using the stated engineering or scientific relationship and adjustable field inputs.
Preparing your result…
What this calculator does
Calculates Anchor Rode Scope Ratio (Rope vs All-Chain 5:1 / 7:1) Sizer using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
Rode length = scope ratio × (depth + freeboard)
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Anchor rode length=selected scope ratio×[water depth+bow attachment height above water], with both heights in the same unit.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Use the greatest expected depth including tide and the attachment point, not depth alone. Rope/chain, weather, bottom holding, anchor type and swinging room affect the required scope;5:1 or7:1 is not universally sufficient. The calculation sizes a chosen scope, not anchoring security.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Water depth (m) | Bow height above water (m) | Scope ratio | Rode to deploy |
|---|---|---|---|---|
| Worked example | 8 | 1.5 | 5 | 47.5 m |
| Half the amounts | 4 | 0.8 | 3 | 14.4 m |
| Double the amounts | 16 | 3 | 10 | 190 m |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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