Try ReefMaster FREE for 14 Days

  • ReefMaster is a Windows Desktop application (see minimum system requirements, below).
  • The trial includes all of the features of ReefMaster, including the Bottom Composition and Sidescan Mosaic modules.
  • Some export functions are limited in the trial version.
  • Demo data is included to help you explore the capabilities of ReefMaster. Of course, you can use your own data too.
  • If you want to keep using ReefMaster after the trial period expires, simply buy a license. No further download is required.
  • ReefMaster can be easily and completely uninstalled after the trial period, if required.

 Download ReefMaster 2 

Download and Installation

  • Existing ReefMaster v1 users must update to the latest ReefMaster v1 release (1.8.40 or later) before installing ReefMaster 2.0, to prevent possible licensing conflicts.
  • If you are already a ReefMaster v1 user, ReefMaster v2.0 can be downloaded and installed in parallel with your existing ReefMaster v1 installation, and you will get a new 14 day trial period to evaluate ReefMaster 2.0.
  • Please review the End User Licence Agreement before downloading.
  • Download the setup files by clicking the download button, above.
  • Once the download completes, run the downloaded installation file and follow the on-screen prompts.
  • Further files may need to be downloaded from Microsoft in order to complete the installation.

ReefMaster Version 1

Minimum System Requirements

Microsoft Windows PC with:

  • 1GB RAM (4 GB recommended, 8GB and 64 bit OS recommended when running the Sidescan Mosaic module or creating maps larger than 15km across).
  • 850MB free disk space.
  • Windows 7/8/8.1/10
  • Hardware graphics support for Microsoft DirectX 10.1 or later is required for some sonar and sidescan rendering features. These features will be disabled if this hardware support is not available.
  • An internet connection is required for the display of background maps.


Any GPS/sounder combination unit capable of recording tracks with depth information, with memory card slot for data transfer.

  • All late model Humminbird™ GPS/Sonar combination units.
  • All late model Lowrance™ GPS/Sonar combination units (must log sonar to save depth information).
  • Most late model Garmin™ GPS/Sonar combination units (depth and position data only, no sonar or sidescan mosaic support).
  • Any device (or devices) capable of providing depth and position data via NMEA0183 (position and depth can be supplied from separate devices).