A first officer, also known as an executive officer or XO, was the officer second-in-command of an establishment or unit, ranking right below the commanding officer. In Starfleet, the first officer normally held the rank of lieutenant commander or commander.

Duties a Starfleet first officer may be expected to perform include:

• Advising the commanding officer
• Implementing the commanding officer's orders
• Preparing and issuing duty rosters
• Commanding the starship, starbase or other establishment in the commanding officer's absence or inability to do so
• Evaluating crew members aboard the starship, starbase or other establishment with the chief medical officer's and / or counselor's assistance.

By the 24th century, Starfleet first officers usually led away teams while the commanding officer stayed aboard the starship.

Notable first officersEdit

• Vanessa Brocato
  • USS Prospect
  • USS Arlington
• Anne Cobry
  • USS Prospect
  • USS Prospect-A
• Patricia Graves
  • USS Hope
• Penelope Koh
  • USS Minnesota (NCC-64332)
• Yves Müller
  • USS Minnesota (NCC-19923)
• John Sill
  • USS Robert Frost
  • USS Artemis
• Elizabeth Singh
  • USS Cantabrian
  • USS Cantabrian-A

External linksEdit

• First officer article at Memory Alpha, the canon Star Trek wiki.
• First officer article at Star Trek Expanded Universe, the fanon Star Trek wiki.