RedactedNarrative: Two people were awakened by the impact of a vessel hitting the port side of the hull.  Subject1 saw the vessel coming.  She gave 3 loud blasts from their horns.  The sailboat was white in color, single mast with blue or black along the waterline, and 26’ to 30’ long.  The sailboat then proceeded downstream with 2 male occupants on board. No injuries were reported.