Series Order

Main books in the series:
The Ship Who Sang (1969, short story collection) PartnerShip (1992) (with Margaret Ball) The Ship Who Searched (1992) (with Mercedes Lackey)

The City Who Fought (1993) (with S. M. Stirling)

The Ship Who Won (1994) (with Jody Lynn Nye) The Ship Errant (1996) (with Jody Lynn Nye)

The Ship Avenged (1997) (with S. M. Stirling)

Complete chronological order:
The Ship Who Sang Honeymoon The Ship That Returned PartnerShip The Ship Who Searched The City Who Fought The Ship Who Won The Ship Errant The Ship Avenged