On Board 2 : A notation on a bill of lading that cargo has been loaded on board a vessel. Used to satisfy the requirements of a letter of credit, in the absence of an express requirement to the contrary
US Department of Transportation, Maritime Administration, Glossary of Shipping Terms, Washington, DC, USA 2008. http://www.marad.dot.gov/documents/Glossary_final. pdf, (Mrtm - Amer) {572}