subsurface: subsurface (Open Source Dive Log Program) subsurface: subsurface: Subsurface is able to track single- and multi-tank dives using air, subsurface: Nitrox or TriMix. It also allows logging of weights and exposure subsurface: protection used, dive masters and dive buddies and enables the user subsurface: to rate dives and provide additional dive notes. subsurface: subsurface: Homepage: https://subsurface-divelog.org subsurface: subsurface: subsurface: