# Nautilus GPS

> Program marine rescue GPS devices with MMSI numbers using your iPhone's camera flash. (iPhone/iPad app by Icarus Aviation Ltd.)

- Source: https://appshunter.io/ios/app/nautilus-gps/id1176272486 (this page in markdown: same URL + `.md`)
- Developer: [Icarus Aviation Ltd](https://appshunter.io/developer/1176272485)
- Category: Utilities
- Price: Free
- Rating: 1.90/5 from 12 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 14 MB
- Languages: American English
- Released: 2016-12-12
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/nautilus-gps/id1176272486/reviews.md

## What is Nautilus GPS?

The Nautilus GPS App uses your iPhones camera flash to set an MMSI number into your Nautilus Marine Rescue GPS.

This enables your Nautilus GPS to send Man Overboard messages to your dive boat for up to 30 minutes in addition to sending an emergency distress signal on AIS.

You can also choose the operating mode of the Marine Rescue GPS to use either AIS (Automatic Identification System), DSC (Digital Selective Calling), or both AIS and DSC.

Note that no MMSI Number is required to operate the Marine Rescue GPS.

## Key features

- Program MMSI numbers
- Utilizes iPhone camera flash
- Sends Man Overboard messages
- Sends emergency distress signals
- AIS and DSC signal transmission
- Selectable operating modes (AIS, DSC, both)

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/nautilus-gps/id1176272486/reviews.md

### 1/5 — App program failef

*2023-05-25*

Unit went through the programming sequence and received the “flash” acknowledgment from the GPS but “Start” button did not appear, I guess on the app. Deleting the app.

### 1/5 — Couldn’t get to work on newer devices starting with 2

*2022-08-21*

I watched two YouTube independent videos on how to do this (Ron Tiah and Abyss Scuba Diving). The app actually has instructions that show the digit is supposed to look like “1XXXX”. But my device SN starts with ‘2’.  About two seconds after the programming the device is supposed to flash twice but mine never did. I suspect it might have something to do the SN not starting with ‘2’. I actually tried changing my first digit to a ‘1’ but it said the serial number was invalid.

### 1/5 — Cannot enter serial number

*2022-02-28*

I have owned my Nautilus Lifeline for a few years and I really like it. Tried to use the app but t it wouldn’t take the serial number… Just another worthless app I suppose!

### 5/5 — Needs update for iOS 15

*2021-12-16*

Please update this app to improve compatibility with iOS 15

## Frequently asked questions about Nautilus GPS

### What is Nautilus GPS used for?

Nautilus GPS is used to program your Nautilus Marine Rescue GPS device with an MMSI number using your iPhone's camera flash. This enables emergency signaling capabilities.

### Does Nautilus GPS require an MMSI number to operate?

No, an MMSI number is not required to operate the Marine Rescue GPS device itself. The app is used to program this number into the device.

### What emergency signals can Nautilus GPS help send?

By programming the device, Nautilus GPS enables it to send Man Overboard messages for up to 30 minutes and emergency distress signals on AIS.

### What operating modes can be selected for the Marine Rescue GPS?

You can choose to operate the Marine Rescue GPS using AIS (Automatic Identification System), DSC (Digital Selective Calling), or a combination of both.

### What devices does Nautilus GPS support?

Nautilus GPS is supported on iPhone and iPod devices. It is rated for ages 4 and up.

### How often is Nautilus GPS updated?

The app was last updated on November 23, 2018, with version 1.2. It was initially released on December 12, 2016.

### What is the user rating for Nautilus GPS?

Nautilus GPS has a rating of 1.9 stars based on 12 ratings.

### Does Nautilus GPS have ads?

No, Nautilus GPS does not contain advertisements.

## Version history (last 3 releases)

### 1.2 — 2018-11-23

Support for iOS 10.0+

### 1.1 — 2017-02-18

User Interface has been completely updated to more closely match the Android version.
Added new region - International.
Added capability for Group MMSI to be used in DSC messages in USA.
Updated graphics and user interface

### 1.0 — 2016-12-12

No release notes.

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## Related topics

[icarus aviation ltd](https://appshunter.io/ios/topics/icarus-aviation-ltd) · [nautilus gps](https://appshunter.io/ios/topics/nautilus-gps) · [nautilus](https://appshunter.io/ios/topics/nautilus)

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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 2026-06-01.*