# Dock Line Calculator — Mooring Line Size & Length

> Mooring Line Size & Length (iPhone/iPad app by EVREN YUCEBAS.)

- Source: https://appshunter.io/ios/app/dock-line-calculator/id6792283809 (this page in markdown: same URL + `.md`)
- Developer: [EVREN YUCEBAS](https://appshunter.io/developer/6782353474)
- Category: Utilities, Navigation
- Price: Free with in-app purchases (on sale, was $4.99)
- Age rating: 4+
- Requires: iOS 16.4 · 37 MB
- Languages: American English
- Released: 2026-07-30
- Data updated: 2026-08-27
- User reviews in markdown: https://appshunter.io/ios/app/dock-line-calculator/id6792283809/reviews.md

## What is Dock Line Calculator?

Work out the right dock lines for your boat in seconds.

Enter your vessel length and Dock Line Calculator gives you the
recommended length for bow, stern and spring lines, plus the rope
diameter to buy — in both inches and millimetres.

FREE
- Bow and stern line length
- Spring line length
- Recommended rope diameter
- Heavy weather diameter for storm moorings
- Feet or metres
- One saved vessel

PRO — one-time purchase, no subscription
- Unlimited saved vessels
- Snubber length from your bow freeboard
- Anchor and mooring bridle leg length from your beam
- Full line inventory with quantities and total rope needed

HOW IT WORKS
Bow and stern lines run about two thirds of vessel length, spring
lines about the full length, and diameter follows the familiar one
eighth of an inch for every nine feet. Everything is shown with the
reasoning, so you can adjust for your own berth.

Works entirely offline. No account, no sign-up, no data collection.

Dock Line Calculator provides general guidance for recreational
vessels and is not a substitute for manufacturer specifications or
your own judgement as skipper.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Dock Line Calculator Pro | $4.99 | one-time |



## Version history (last 1 release)

### 1.0.0 — 2026-07-30

No release notes.

## More apps by EVREN YUCEBAS

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- [PostureCalm](https://appshunter.io/ios/app/posturecalm/id6785854829)

All apps by EVREN YUCEBAS: https://appshunter.io/developer/6782353474

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*