Features & Capabilities

Professional marine calculator for boat owners and marine engineers.

Dragging anchor at 2 AM because you let out too little rode? Not sure which scope ratio to use for tonight's weather? This app calculates exactly how much chain or rope to deploy for safe anchoring.

SCOPE CALCULATOR - Enter water depth, freeboard height, tide range, and weather conditions. Calculates required anchor rode length for all-chain, chain-and-rope, or all-rope systems. Shows minimum and recommended scope with swing radius.

SCOPE TABLE - Quick reference for depths 5 to 100 feet at scope ratios 3:1, 5:1, 7:1, and 10:1.

ANCHOR GUIDE - Compare Danforth, Plow/CQR, Bruce/Claw, Mushroom, and Navy types with holding power ratings and best bottom type for each.

BEAUFORT SCALE - Wind speed to sea state reference (Force 0-12) with recommended scope ratio for each condition.

Built for sailors, cruisers, and powerboaters. Supports metric and imperial. Works offline. No account or login required.

User Growth & Download Statistics

App
By:
Shanghai Sheyuan Network Technology Co., Ltd.
Version:
1.0.2 Last updated: 2026-04-25
Version code:
884658816
Creation date:
2026-04-08
Compatible devices:
Size:
2.12MB
Price:
2.99
URLs:
Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-07
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Shanghai Sheyuan Network Technology Co., Ltd.
Apple Apps Store
https://apps.apple.com/ca/app/anchor-chain-scope-length/id6761676477

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