# RadarCop — Marine Radar Plotting Aid

> Marine Radar Plotting Aid (iPhone/iPad app by Dlyaver Alchik.)

- Source: https://appshunter.io/ios/app/radarcop/id6768069085 (this page in markdown: same URL + `.md`)
- Developer: [Dlyaver Alchik](https://appshunter.io/developer/1896122064)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 5 MB
- Languages: American English
- Released: 2026-05-12
- Data updated: 2026-06-03
- User reviews in markdown: https://appshunter.io/ios/app/radarcop/id6768069085/reviews.md

## What is RadarCop?

RadarCop is a professional radar plotting assistant designed for mariners, deck officers, cadets, and bridge teams.

The app helps perform manual radar plotting calculations using own ship and target observations. Enter three radar observations, assess relative motion, calculate CPA/TCPA, test trial maneuvers, save plotting history, and export a clean PDF plotting sheet.

Main features:

• Own ship course and speed input
• Target bearing and range observations
• Three-point radar plotting workflow
• CPA and TCPA calculation
• Target course and speed estimation
• Trial maneuver calculation
• Optional trial delay logic
• Relative motion assessment
• Radar-style plotting board
• Calculation history
• PDF export for record keeping or training
• Built-in Help & User Guide

RadarCop is useful for training, bridge preparation, radar plotting practice, and quick cross-checking of manual calculations.

Important notice:
RadarCop is a calculation aid only. It does not replace official navigation equipment, ARPA, ECDIS, radar, COLREGs, company procedures, or the professional judgment of the Officer of the Watch. All navigational decisions remain the responsibility of the vessel’s bridge team.


## Version history (last 2 releases)

### 1.0.1 — 2026-05-12

Improved multi-target Trial Maneuver logic.
Fixed CPA/TCPA Assist behavior when Desired TCPA is optional.
Improved safety validation across all active targets.

### 1.0 — 2026-05-12

No release notes.

## More apps by Dlyaver Alchik

- [GyroCop](https://appshunter.io/ios/app/gyrocop/id6765901477)

All apps by Dlyaver Alchik: https://appshunter.io/developer/1896122064

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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 2026-06-03.*