Malik Harmon had 15 points and five assists for the Red Flash (3-3), while Ronnie Drinnon added 15 and Earl Brown had 12 points and seven rebounds. St. Francis shot 65 percent (34 of 52) from the floor and made 11 of 22 3-pointers.
A close game early, Navy trailed by just two with 7:30 left in the first. But St. Francis closed the half on an 18-2 run to lead 46-28 at the break and the Midshipmen trailed by as many as 29 in the second half before the teams emptied their benches.
Navy went to the line just five times, making two, and was 6 of 19 from beyond the arc.