# Maritime Master - Radar — Radar & ARPA Simulator

> Maritime radar and ARPA simulator for navigation training and collision avoidance practice. (iPhone/iPad app by MARITIME MASTER LIMITED.)

- Source: https://appshunter.io/ios/app/maritime-master-radar/id6751800471 (this page in markdown: same URL + `.md`)
- Developer: [MARITIME MASTER LIMITED](https://appshunter.io/developer/1107589346)
- Category: Education, Reference
- Price: Free with in-app purchases
- Rating: 4.70/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 40 MB
- Languages: American English
- Released: 2026-02-17
- Data updated: 2026-08-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/maritime-master-radar/id6751800471/reviews.md

## What is Maritime Master?

Maritime Master - Radar is a simulator designed to help maritime students, deck officers, and enthusiasts practice radar navigation and collision avoidance workflows in a safe, controlled environment.

Bridging the gap between theory and the bridge, this app transforms your device into a fully functional radar station. Whether you are refreshing your knowledge of Relative Motion vs. True Motion or practicing the mechanics of target tracking, this simulator offers a realistic "Green Screen" experience powered by Metal graphics for an authentic sweep and decay effect.

IMPORTANT: FOR SIMULATION & TRAINING PURPOSES ONLY. This application is a simulator designed for practice and educational reinforcement. It is not a regulated piece of navigation equipment and must not be used for real-world navigation or collision avoidance on a vessel.

Key Features:
- Realistic Radar Physics: Experience authentic sweep visuals with adjustable Gain, Sea Clutter, and Rain Clutter controls to simulate varying environmental conditions.
- Full ARPA Functionality: Acquire and track targets to calculate CPA (Closest Point of Approach) and TCPA. Visualize risks with dangerous target alarms.
- Vector Modes: Switch between True and Relative Vectors to visualize target aspect and movement. Adjust vector length (minutes) to predict future positions.
- Standard Navigation Tools: Utilize dual Variable Range Markers (VRM) and Electronic Bearing Lines (EBL) to determine range and bearing with precision.
- Display Modes: Toggle between Head Up, North Up, and Course Up orientation. Switch the display between Relative Motion (RMTT) and True Motion to understand traffic flow.

Scenario Library: Test your COLREGs knowledge with pre-built scenarios including:
- Crossing Situations (Stand-on and Give-way)
- Overtaking and Being Overtaken
- Head-on encounters
- Busy waters with mixed traffic types
- Coastal navigation with land masking

"True View" Overlay: Toggle the underlying map view to compare the radar return against the "ground truth" of the scenario.

AIS Integration: Simulated AIS overlays provide target names, types, and kinematic data (COG/SOG) alongside raw radar echoes.

Practice Scenarios: The app includes a suite of scenarios designed to test specific competencies. From simple open-water encounters to complex multi-vessel situations involving fishing vessels, cargo ships, and high-speed craft, you can practice your decision-making without the risk.

Own-ship Control: Take command of your vessel. Adjust your Heading and Speed to execute collision avoidance manoeuvres and observe the resulting change in Relative Motion on the scope.

Whether you are studying for your OOW exams or just want to keep your radar skills sharp, Maritime Master - Radar puts the Plan Position Indicator (PPI) in your pocket.

EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Realistic radar physics with adjustable controls
- Full ARPA functionality for target tracking
- True and Relative Vector modes
- Standard navigation tools (VRM, EBL)
- Multiple display and orientation modes
- Scenario library for COLREGs practice
- Simulated AIS overlays

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Maritime Master - Radar Pro | $1.99 | per month |
| MMR Pro Max | $4.99 | per month |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/maritime-master-radar/id6751800471/reviews.md

### 5/5 — Realistic, very professional but I have a quick question.

*2026-07-15*

I recently started using this app to help me learn how to stand watch later this summer. 

I am wondering if I can get the developer’s contact info so I can contact them regarding usage of this app in YouTube content creation. I like to make videos explaining stuff regarding ships and am wondering if this is free to use in a video or if it is prohibited for use. 

Thanks for the great app.

**Developer response:** Thank you so much for the kind words and the five stars, it means a lot!

To get in touch, head over to www.themaritimemaster.com and fill in the contact form.

As for using the app in your content: yes, you’re welcome to! We grant you permission on the condition that you say it as an educational tool, and that you mention the app by name along with a link to our website or the app’s store page.

Thanks again, and good luck with the videos!

### 5/5 — Addictive

*2026-02-21*

Straightforward to use and packed with useful features! Look forward to the updates.

## Frequently asked questions about Maritime Master

### What is Maritime Master - Radar used for?

Maritime Master - Radar is a simulator for practicing radar navigation and collision avoidance workflows. It's designed for educational reinforcement and is not for real-world navigation.

### Does Maritime Master - Radar have ads?

No, Maritime Master - Radar does not contain advertisements. The app is free to download and use, with optional in-app purchases for advanced features.

### What are the subscription options for Maritime Master - Radar?

Maritime Master - Radar offers two subscription plans: 'Maritime Master - Radar Pro' for $1.99/month with a 7-day free trial, and 'MMR Pro Max' for $4.99/month with a 14-day free trial.

### What kind of scenarios are available in Maritime Master - Radar?

The app includes a scenario library covering crossing situations, overtaking, head-on encounters, busy waters, and coastal navigation with land masking, all designed to test COLREGs knowledge.

### Can I practice controlling my own ship in Maritime Master - Radar?

Yes, you can control your own vessel's heading and speed to execute collision avoidance maneuvers and observe the resulting relative motion changes on the radar scope.

### What devices is Maritime Master - Radar compatible with?

Maritime Master - Radar is available on Mac, iPhone, and iPad, allowing users to practice on various Apple devices.

### How often is Maritime Master - Radar updated?

The latest version, 3.1, was released on July 4, 2026, indicating regular updates to improve functionality and content.

### What is the age rating for Maritime Master - Radar?

Maritime Master - Radar has an age rating of 4+, making it suitable for a wide range of users interested in maritime education.

## Version history (last 5 releases)

### 3.1 — 2026-07-04

10 new charts
Every watch now ends with a full training Debrief, your score, the closest CPA/TCPA you reached, whether you acted early, missed contacts, and a timeline you can replay.
New guided Training Packs (Pro) cover COLREGS crossings, restricted visibility, ARPA tracking, pilotage, the Dover Strait and yacht radar, with goals, badges and shareable certificates.
Switch on realistic sensor errors to keep you cross-checking your instruments.
Pro Max can export debrief reports for training records.

The radar and electronic chart got a big realism pass: filled land returns with radar shadow, receiver noise and antenna side-lobes, an IHO S-52 vector chart with Day/Dusk/Night palettes, safety-contour depth shading, sectored lights, buoy topmarks and a tunable Realism panel.

### 3 — 2026-03-02

New Pro features
Scenario creator
Procedural watch
More bug fixes and improvements

### 2.1 — 2026-02-21

Fixes
ARPA CPA/TCPA and scan settings now apply correctly from Radar Config
ARPA vectors now correctly follow True/Relative motion mode
Fixed circular slider tap behaviour to prevent knob jumping

Improvements
Unified vector length control for both ARPA and AIS
Separate colour controls for VRM 1 and VRM 2
Added + / – stepper controls for precise circular slider adjustments
Radar ring labels now display consistently at 12 o’clock
Radar return strength now better reflects vessel size
Improved gain/sea/rain dial direction and control smoothness

### 2.0 — 2026-02-17

Redesigned map
Added new features
Fixed bugs and improved the overall experience

### 1.0 — 2026-02-01

No release notes.

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All apps by MARITIME MASTER LIMITED: https://appshunter.io/developer/1107589346

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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 2026-08-17.*