This specification covers the design, construction, and installation of intermediate portable flush deck stanchions. Intermediate stanchion is defined as any stanchion that is not an end or corner stanchion. Stanchions shall be used on interior and exterior decks, to provide temporary protection to minimize the danger of personnel falling overboard or to a lower level in the ship in areas where the installation of a fixed system would interfere with vessel operations. Stanchions may be used with 3/8-in. (9.5-mm) galvanized close link chain or wire rope lifelines 9/16-in. (14-mm) top course, 7/16-in. (11-mm) lower courses. This specification covers only the stanchions and does not cover requirements for the chain or wire rope lines to be supported by the stanchion. The values stated in inch-pound units are to be regarded as the standard.