old US Navy blue uniform jacket/coat w/patches & buttons

Vintage blue Navy uniform jacket with a gold shield patch on the lower right arm. We're not sure of the exact vintage or service branch of this coat. It measures about 16 inches long on the arm (armpit to cuff), 38 inches around the chest (under the arms), 16 inches across the shoulders on the back and 30 inches long. This jacket is in good condition.