The Subsurface development team proudly announces the release 4.9.3 of Subsurface, an open source dive log and dive planning program for Windows, Mac and Linux.

This release fixes a number of issues in 4.9.1 (Subsurface 4.9.2 was tagged but never announced).

Some of the changes in Subsurface 4.9.3:


  • Desktop: close dive site widget if dive site is removed by undo

  • Desktop: Don’t destroy format of planner notes when editing dive notes [#2265]

  • Map: avoid full map reload when clicking on flag

  • Map: highlight all selected dive sites when clicking on flag

  • Map: fix crash when clicking on flags in Qt 5.9

  • Desktop: fix crash when saving subtitles or profile picture

  • Desktop: fix copy & paste crash

  • Desktop: fix saving to XML with empty dive site taxonomies

  • Desktop: fix display of trip time

  • Planner: fix calculation of CNS for pO2 > 1.6 bar

  • Mobile: allow editing weights for dives that have no weight


  • add support for Deepblu Cosmiq+

  • add support for Aqualung i200C

  • various bug fixes

Where do I find binaries?

Binaries are available for Windows, Mac, and an AppImage for x86-64 Linux (plus distribution specific binaries for a number of Linux flavors including Ubuntu, Fedora, and openSUSE).

You can get Subsurface 4.9.3 from these locations:


Mac: (this is intended for the latest macOS version. For other macOS versions, see the downloads page)

Linux: A generic AppImage is available for download: Subsurface-4.9.3-x86_64.AppImage, make it executable

chmod +x Subsurface-4.9.3-x86_64.AppImage and then simply run this file.

Linux: Snap Get it from the Snap Store

Linux: Ubuntu: Add ppa:subsurface/subsurface to your software sources; the .deb in that PPA can also be installed on sufficiently current versions LinuxMint; see the Downloads page and use to get our latest release version.

Linux: openSUSE: go to our open build service release page

Linux: Fedora: go to our COPR release page

Please post questions of problems in the User Forum or file a bug in our Bug Tracker.