Lieutenant's hat

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

Locations

 * The lieutenant's hat is a reward given to the player by Captain Ironsides when returning to the USS Constitution's new location after its take-off with one's promotion to the rank of "honorary lieutenant".
 * This hat can also be found outside the Custom House Tower when telling Dogmeat to fetch any items. He will run to mannequin display windows and pull out random hats.