SEAiq USA is a full-featured marine navigation app. It automatically downloads all charts (both vector and raster) from NOAA and the US Army Corps of Engineers for regions of USA you select.

Other features include:
* Waypoints
* Routes
* Tracks
* Night color modes
* Anchor alarm
* Automatic download and display of weather (wind & isobar)
* Chart measuring tools (EBL/VRM)
* WiFi-based NMEA and AIS
* Raster charts
* Vector charts

No purchase is required in order to use SEAiq USA to view charts. All features are enabled during a 7-day evaluation period. After that, many of the feautures require purchase of an in-app upgrade.

Continued use of GPS running in the background can dramatically decrease battery life.

What’s New

Version 5.0.15

* Minor improvements and fixes

Ratings and Reviews

4.7 out of 5
335 Ratings

335 Ratings

7-6 & Bo Pilot ,

Paper Charts

I have SEAiq USA on two iPad Pro 12.9” devices, one primary one backup. I supplement them with a chartplotter. I do not carry paper charts, which are out-of-date the moment ink hits paper.

I can hear the “gotta have paper” crowd howling, but for the last several years of a career flying a 400,000 pound jet all over the U.S., in the cockpit for charts were two off-the-shelf iPads, one for the captain, one for the first officer. We also had two moving maps that are roughly analogous to a chartplotter. So if you’re a paper purist, don’t get on a commercial jet. There will be no paper.

DavidM5527 ,

Ok, but no longer supports new Active Captain data.

I have used Seaiq for several years as my iPad backup to the boats chartplotter. It does a good job at that and I like its raster chart capability.

But they no longer support new Active Captain data and if you had not used Seaiq with the old AC then you cant download any AC data. So I am now mostly using Aqua Map.


shawn liz ,

Our main charting tool

Although we have a full electronics suite in our trawler, when cruising , our primary charting tool is SEAiq on an iPad. The updated charts with the AIS target overlay are invaluable to us and we found this program to be one of the best bangs for the buck!

App Privacy

The developer, Sakhalin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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