Chief Science Officer

Chief Science Officer
Affiliation: Federation
Higher Rank: Executive Officer
Lower Rank: Assistant Chief Science Officer
Command: Department Head
Known Chief Science Officers: Spock, USS Enterprise; Data, USS Enterprise-D; Jadzia Dax, Deep Space 9/USS Defiant
[ Source ]

The Chief Science Officer is responsible for all the scientific data the ship/facility collects, and the distribution of such data to specific section within the department for analysis. S/he is also responsible with providing the ship's captain with scientific information needed for command decisions.

S/he also is a department head and a member of the Senior Staff and responsible for all the crew members in her/his department and duty rosters.