The mark consists of the white words "GREAT SOUTH BAY" set within a horizontally sub-divided red and yellow square. The black word "BREWERY" appears beneath the sub-divided red and yellow box. Beneath the black word "BREWERY" are four smaller colorized squares. The first smaller square is horizontally sub-divided by the colors yellow and red and is the U.S. Navy Signal Flag symbolizing the number "2"; the second smaller square contains five blue crosses in a symmetrical pattern set over a white background and is the U.S. Navy Signal Flag symbolizing the number "0"; the third smaller square also contains five blue crosses in a symmetrical pattern set over a white background and is the U.S. Navy Signal Flag symbolizing the number "0"; and the fourth smaller square is vertically sub-divided by the colors blue and white and is the U.S. Navy Signal Flag symbolizing the number "9". A thin gray line borders the entire logo with the lower portion of the border passing through the center of the four smaller colorized squares.