The mark consists of a circular design bordered by roping, in yellow and black. Attached to this circular design are two red banners, outlined in black, within which are the words MARINE ROTATIONAL FORCE SOUTHEST - ASIA in yellow. Within the border of the circular design is map of Southeast Asia, with the oceans in blue and the landmasses in gray, with latitude and longitude lines in black. Also found within the circular design is a bald eagle, in brown and white, clutching an anchor, in blue, around which is an anchor line, in brown and black. Above the eagle is a Roman numeral one, in yellow.
The color(s) yellow, red, gray, brown, white and black is/are claimed as a feature of the mark.