SEAiq is a full-featured marine navigation app.

It is the only marine navigation app that allows you to load your own charts in a variety of standard formats, including: S-57, S-63, iENC, BSB, and KAP. It also includes the ability to automatically download charts from NOAA for the USA and download of raster charts based on satellite imagery.

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

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

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

What's New

Version 4.7.0

* Minor improvements and fixes

Customer Reviews

4.4 out of 5

9 Ratings

9 Ratings

This app is great


I downloaded this app to use in the tender on iPad and iPhone and when not within range of our furuno tz touch.
The 20 bucks to upgrade is well worth the price considering you can use it with already purchased or cm93 charts or with free us downloadable charts.

If you want a chart plotter for a tenth the cost of a marine version I suggest this app, an iPad and a lifeproof cover. i honestly would be happy sailing around the world with one(and a few paper charts for spare;)

I will mention that with the entire world downloaded the system runs a bit slower but if you only have the area you are using installed it seems to run faster. Also after installing it on your iPad and when you go to use it on your iPhone you just have to click purchase again and it will update although you don't get charged twice as long as your apple ID is the same.
Happy sailing and thanks seaiq for putting chart plotters within reach of the common people. I wonder how long it is before everyone is using iPad as there main chart plotters?

Best app


I have been using SeaIQ for 2 years now. It was used to sail from fort Pierce to the Bahamas loading all Explorer charts (Raster). Then later loading all my vectors charts used on OpenCPN we sailed from the Bahamas to Cayman, Guatemala. Just had some issue with some S-63 charts - but I have the same issue with OpenCPN. The app is very intuitive and easy to learn. We are using it more now than our laptop and as a substitute to our Navionics chartplotter where some charts are unreliable. So far it is the best app for navigation.

Works with CM93 A-OK


Nice. Now I can use the same charts on my iDevice as I can on OpenCpn, cm93.

I installed the entire world on a iPod Touch 4. Rendering can be a bit slow/choppy when starting out, but seems to cache some information as it gets a bit better when viewing areas already viewed previously.

Would be nice to get GPS data from a TCP/IP source instead of only built in GPS (since mine does not have one). Will also conserve battery life if the internal GPS can be disabled.

I could see this product be a great companion to OpenCpn as new features are added to the product. If the developer could provide a good integration/complement to OpenCpn I think there would be lots of interest.

Add some pages to repeat NMEA data and you could easily have a repeater for your Nav system as well (assuming they offer TCP/IP support for nmea data).

Well done so far, and looking forward to updates.


Sakhalin, LLC
43.7 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2018 Sakhalin LLC
In-App Purchases
  1. Upgrade for Premium Features $49.99


  • Family Sharing

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

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