Moeller, a New Jersey native and son of a World War II navy veteran, graduated from the University of Notre Dame in 1974, receiving his commission from the Notre Dame Naval Reserve Officers Training Corps program.

Trained as a surface warfare officer, Moeller served in a variety of sea and shore assignments, including joint duty.

During his command of Port Royal, the ship received her third and fourth consecutive Battle E awards, and installed and employed Linebacker, the navy's first TBMD capability.

He earned a master's degree in national security studies from the Edmund A. Walsh School of Foreign Service, Georgetown University.

Moeller died on 28 March 2011 from complications of amyotrophic lateral sclerosis (Lou Gehrig's disease) and is buried at Arlington National Cemetery.