PR 17 : Public Resolution which requires that U.S. Government financed cargoes (Eximbank) must be shipped 100 percent in U.S. flag ships, but that the requirement may be waived up to 50 percent in some cases
EESiFlo North America, Terminology and Glossary: Maritime Terms, Pennsylvania, USA 2002, flowmeterdirectory.com/flowmeter_terminology. (Mrtm/ Ports and Ships - Amer) {539}