Hull maintenance technician

Hull maintenance technician was a rating given to crewmen and non-commissioned officers who were responsible for the maintenance and repair of the hull and armor aboard Starfleet vessels.

Insignia

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

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

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