Defiant starlog
The Defiant starlog was the method used by  aboard the  to officially record the ship's missions. At least one starlog entry was recorded in 2155, following Archer's acquisition of the ship. ()

Entries 
"Defiant starlog, January 18, 2155. We've recovered the missing engine components and I've ordered a course to rendezvous with the assault fleet."

See also 
 Captain's starlog, Enterprise (NX-01), 2155

de:Logbuch der USS Defiant (NCC-1764)
Logs