MIL-STD-2199A, DEPARTMENT OF DEFENSE STANDARD PRACTICE: COVERINGS FOR WATERBORNE MAIN PROPULSION SHAFTING ON U.S. NAVAL SURFACE SHIPS AND SUBMARINES (26 JUL 2010)., This standard covers standard practices for the application of a four-layer shaft covering system onthe body areas of waterborne main propulsion shafting. Material and application requirements are also provided forcoatings that are to be applied to waterborne shaft flange assemblies.