cliparts/2/e/6/8/clipart-top-sign-single-danger-2e68.svg image/svg+xml Open Clip Art Library top sign single danger 2010-06-11T22:16:22 top sign for sea chart symbol of single danger buoy http://openclipart.org/detail/66307/top-sign-single-danger-by-seafish seafish buoy chart clip art clipart danger navigation sailing sea sign symbol top