AIS Radar

AIS Radar for iPhone®

AIS Radar displays AIS (Automatic Identification System) data received from marine AIS transponders such as the ExNC 101 Class B AIS Transponder over a Wi-Fi network. For AIS transponders or receivers without built-in Wi-Fi support, an external serial-to-Wi-Fi adapter such as SEAMate1A® Lite, the iMux, the Roving Networks RN-370 or the Digi Connect® Wi-SP can be used. Alternatively, the application can display AIS data received from public internet AIS feeds such as Hi-Def San Francisco.


September 18, 2014: There are some minor (mostly cosmetic) display issues with the current AIS Radar 1.2 release on iOS 8, which are being investigated. Furthermore, release 2.0 is planned for later this year, which will fully support iOS 8, as well as iPhone 6 and iPhone 6+.

March 23, 2013: Version 1.2 is available on the App Store. The new release supports the iPhone 5 display and can use an external GPS/GNSS receiver (via NMEA 0183 RMC sentences) instead of the iPhone's built-in GPS receiver to determine the own ship's position if the AIS receiver does not provide this information. This release no longer supports the original iPhone and iPhone 3G.

Application Features

  • Radar PPI-like display of AIS targets with course/heading and speed information.
  • Selectable display range.
  • Symbols for different targets (vessels with AIS class A and class B transponders, SAR aircraft and navigation aids).
  • Computation of closest point of approach (CPA) and time to closest point of approach (TCPA).
  • Option to hide slow moving (or non-moving) targets from Radar view.
  • Tap to select targets, double-tap to display detailed information about selected targets.
  • Pinch gestures and +/- buttons to change display range.
  • Different display modes: Heading Up, Course Up and North Up.
  • List and detail views for AIS targets, displaying all available information about a target in clear form.
  • Viewer for AIS safety-related broadcast messages.


  • Radar Screen
  • Radar Screen
  • Radar Screen
  • Radar Screen
  • Radar Screen


This application is no replacement for professional marine equipment. Always adhere to the principles of good seamanship and use proper caution and common sense when commanding a ship.

Available on the App Store