This discount will apply only to tickets purchased at the ticket window for use on October 23, 2016. For larger parties, additional tickets can be purchased for only $10 each. Patriots Point Naval & Maritime Museum is open from 9 a.m. to 6:30 p.m. Admission includes all three historic Navy vessels -- the USS Yorktown CV-10, USS Laffey DD-724 and USS Clamagore SS-343--as well as all exhibits, Cold War Submarine Memorial and the 2.5-acre Vietnam Experience.