The Navy's Chief of Naval Operations (CNO) certified a significant milestone in the submarine force's transition to electronic charting by approving version 8.3 of the Voyage Management System (VMS) for use aboard attack and guided-missile submarines June 9. For submarine installations VMS is tested and certified by engineers from Naval Surface Warfare Center (NSWC) Port Hueneme, Virginia Beach detachment. This latest software version enhances submarines' abilities to navigate in extreme northern latitudes and conduct under-the-ice operations.