Environmental technician

Environmental technician was a rating given to crewmen and non-commissioned officers who were responsible for the maintenance and operation of environmental controls aboard Starfleet vessels.

Insignia

	Environmental technician recruit	Environmental technician apprentice	Environmental technician crewman
Earth Starfleet
2260s
2270s
Late 2270s	N/A
2350s-2360s
2360s-2370s service uniform
2360s-2370s duty uniform
2370s-2380s

	Environmental technician third class	Environmental technician second class	Environmental technician first class
Earth Starfleet
2260s
2270s
Late 2270s	N/A
2350s-2360s
2360s-2370s service uniform
2360s-2370s duty uniform
2370s-2380s

	Chief environmental technician	Senior chief environmental technician	Master chief environmental technician
Earth Starfleet
2260s
2270s
Late 2270s
2350s-2360s
2360s-2370s service uniform
2360s-2370s duty uniform
2370s-2380s