H.M.S. Victory is the oldest commissioned warship (1765) but has been in dry dock as a museum ship since 1922.
U.S.S. Constitution is the oldest commissioned warship still in service (1797) but is no longer a warship but a sail-training ship.
Kommuna (formerly HIRMS Volkov under Imperial Russia and USSRS Kommuna under the Soviet Union) is the oldest commissioned warship still in active duty (1913)
Kommuna is a salvage vessel, not really a warship, but is the world’s oldest active duty naval vessel.
https://en.wikipedia.org/wiki/Russian_salvage_ship_Kommuna
H.M.S. Victory is the oldest commissioned warship (1765) but has been in dry dock as a museum ship since 1922.
U.S.S. Constitution is the oldest commissioned warship still in service (1797) but is no longer a warship but a sail-training ship.
Kommuna (formerly HIRMS Volkov under Imperial Russia and USSRS Kommuna under the Soviet Union) is the oldest commissioned warship still in active duty (1913)
Out of curiosity, I looked at some more ships from the list of oldest ships.
The Charles W. Morgan is the second oldest ship still afloat, after the U.S.S. Constitution. She was a whaler and is berthed in Mystic Connecticut.
The Tarihi Kadirga is the oldest surviving galley, an oar-powered ship type. Very neat.
The Pesse canoe is about 10,000 years old and is the oldest surviving watercraft, apparently. Boggles the mind!