Running Lights 3 : Various colored lights required by law on vessels underway between sunset and sunrise to distinguish its height, starboard from port, and stern from bow. Vessels at anchor use different lights
Association of Marine Underwriters of San Francisco (AMUSF), Glossary of Marine Insurance and Shipping Terms, http://www.amusf.com/Definitions_A.htm, CA, USA 2011. (Mrtm Insur and Shipping - Amer) {575}