# Marlin by NGA

> Offline maritime safety information and navigation data for safe sea travel. (iPhone/iPad app by National Geospatial-Intelligence Agency.)

- Source: https://appshunter.io/ios/app/marlin-by-nga/id1639409548 (this page in markdown: same URL + `.md`)
- Developer: [National Geospatial-Intelligence Agency](https://appshunter.io/developer/935822508)
- Category: Reference, Navigation
- Price: Free
- Rating: 5.00/5 from 5 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 76 MB
- Languages: English, Spanish
- Released: 2023-01-04
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/marlin-by-nga/id1639409548/reviews.md

## What is Marlin by NGA?

Marlin brings NGA’s Maritime Safety Information datasets to your mobile device to help you navigate safely at sea. With Marlin, you can download the latest maritime safety reports and reference information before setting sail, then search and view the information on an interactive map, even when you have no cell service. Marlin automatically checks for updates when you have a data connection, and informs you what’s new.

Fair winds and following seas!

## Key features

- Offline maritime safety data
- Interactive map search
- Automatic update checks
- Downloadable safety reports
- Mobile reference information

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/marlin-by-nga/id1639409548/reviews.md

### 5/5 — Time Saver!

*2023-01-19*

Everything at your fingertips! works great on my phone or iPad!

## Frequently asked questions about Marlin by NGA

### What is Marlin by NGA?

Marlin by NGA is a free mobile application that provides access to NGA’s Maritime Safety Information datasets. It is designed to help users navigate safely at sea by offering downloadable reports and reference information that can be accessed offline.

### Is Marlin by NGA free to use?

Yes, Marlin by NGA is completely free to download and use. It does not require any payment or subscription to access its features and data.

### Does Marlin by NGA work offline?

Yes, a key feature of Marlin by NGA is its ability to download maritime safety reports and reference information for offline use. This allows users to access critical data even when they have no cell service.

### How often is Marlin by NGA updated?

The app was last updated on October 2, 2024, with version 1.5.0. Marlin automatically checks for updates when you have a data connection and informs you of new information.

### What devices support Marlin by NGA?

Marlin by NGA is available for both iPhone and iPad devices. It is designed to be accessible on common Apple mobile platforms.

### What is the age rating for Marlin by NGA?

Marlin by NGA has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals, with no mature content concerns.

### Does Marlin by NGA have ads?

No, Marlin by NGA does not contain advertisements. As a free application developed by the National Geospatial-Intelligence Agency, it focuses on providing essential safety information without commercial interruptions.

### How does Marlin by NGA compare to other navigation apps?

Marlin by NGA specifically focuses on providing official Maritime Safety Information datasets from the NGA, with a strong emphasis on offline access and interactive map search. It is a specialized tool for mariners seeking reliable safety data.

## Version history (last 5 releases)

### 1.5.0 — 2024-10-02

Expect smooth sailing, we smashed a few bugs and increased performance.

### 1.4.1 — 2024-03-13

Lost at sea?  Planning a cruise?  We got you covered, Marlin now provides custom route creation.

### 1.4.0 — 2024-02-06

Lost at sea?  Planning a cruise?  We got you covered, Marlin now provides custom route creation.

### 1.3.0 — 2023-11-09

Bookmark your favorite pieces of maritime safety information for reference later.

Ever wanted to share Marlin data?  Export Marlin data as a GeoPackage to share with other mapping applications.

### 1.2.1 — 2023-08-29

Minor bug fixes and performance improvements.

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## More apps by National Geospatial-Intelligence Agency

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- [MAGE by NGA](https://appshunter.io/ios/app/mage-by-nga/id1032815042)
- [Tearline by NGA](https://appshunter.io/ios/app/tearline-by-nga/id1201916437)
- [Aero App](https://appshunter.io/ios/app/aero-app/id1206560691)
- [MapCache by NGA](https://appshunter.io/ios/app/mapcache-by-nga/id1477252454)

All apps by National Geospatial-Intelligence Agency: https://appshunter.io/developer/935822508

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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 2026-06-10.*