ARLINGTON, Va. — A small company is offering to the Navy a small, high-speed craft that it says can take on some of the missions of the littoral combat ship (LCS) in regional operations. The Ghost, a small waterplane-area twin-hull (SWATH) craft designed by Juliet Marine Systems Inc. of Portsmouth, N.H., has been tested in prototype form at sea and has been demonstrated to potential customers, including the U.S. Navy, said Greg Sancoff, chief executive officer of Juliet Marine. The Ghost is designed to perform anti-surface (ASUW) and antisubmarine warfare (ASW) and mine countermeasures (MCM), the three intended roles of...