A five-year mission was a standard mission duration for Federation starships in the 23rd century. With bigger, faster and more enhanced vessels, ships could perform exploratory missions farther outside Federation space, and not need to dock at a starbase so often.

Five-year missions were usually conducted by larger Federation starships such as the Constitution class and Excelsior class.

Between 2245 and 2285, the USS Enterprise (NCC-1701) conducted six five-year missions, most famously under Captain James T. Kirk between 2265 and 2270.

During his career, Robert April commanded four five-year missions. The Enterprise's first one was under his command, and prior to that he conducted three missions in command of the USS Tiberius. (EV comic: "Flesh of My Flesh")

Missions ConductedEdit

• USS Constitution
  • 1st: 2243 to 2248
  • 2nd: 2248 to 2253
  • 3rd: 2254 to 2259
  • 4th: 2259 to 2264
  • 5th: 2265 to 2270
  • 6th: 2270 to 2275
• USS Enterprise
  • 1st: 2246 to 2251
  • 2nd: 2251 to 2256
  • 3rd: 2257 to 2263
  • 4th: 2265 to 2270
  • 5th: 2273 to 2278
  • 6th: 2278 to 2283

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