Lightship
or vessel serving as a lighthouse in positions LIGHTBOAT, vessel serving as a lighthouse in positions Over 40 lightships guard the coast of the United States. The new South Shoal farther out to sea than any other light- lightship, 26 miles from Nantucket, is ship in the world. a LIGHT THERAPY. See PHOTO LIGHT THERAPY. See Pнoтo Tertiary age, converted into a kind of coal. It is usually dull or brownish-