xmlns:atom="http://www.w3.org/2005/Atom"
110. “Operate autonomously” (8) means operating fully submerged, without snorkel, all systems working and cruising at minimum speed at which the submersible can safely control its depth dynamically by using its depth planes only, with no need for a support vessel or support base on the surface, sea-bed or shore, and containing a propulsion system for submerged or surface use.