Lieutenant's hat

The lieutenant's hat is a piece of headwear in Fallout 4.

Gameplay
This hat is a unique version of Captain Ironsides' hat.

Variants

 * Captain Ironsides' hat

Location
The lieutenant's hat is a reward given to the Sole Survivor by Ironsides when returning to the USS Constitution's new location after its take-off, with their promotion to the rank of "honorary lieutenant."

Related quest

 * Last Voyage of the U.S.S. Constitution