maiden voyage - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The first experience, as in This tennis tournament is my maiden voyage in statewide competition. This term, originally meaning the first voyage of a ship, was first recorded in 1901, but the use of maiden to signify “the first time” dates from the mid-1500s.