Submersible used to take tourists to view wreck of Titanic goes missing in Atlantic Ocean, sparking search and rescue mission.
Submersible used to take tourists to view wreck of Titanic goes missing in Atlantic Ocean, sparking search and rescue mission.
The issue is less the oxygen and more the carbon dioxide removal. assuming the sun has good scrubbers to clean out the co2 then okay, however it can depend how they are powered. There are comparisons to the Apollo 13 situation here.