228 years ago today, on 21 October 1797, three-masted heavy frigate USS Constitution was launched at Edmund Hartt's shipyard, Boston, MA
USS Constitution, Charlestown, MA
228 years ago today, on 21 October 1797, three-masted heavy frigate USS Constitution was launched at Edmund Hartt's shipyard, Boston, MA
USS Constitution, Charlestown, MA
54 years ago today, on 21 October 1971, Town-class light cruiser HMS Belfast (C35) became a museum ship on Trafalgar Day.
Museum ship HMS Belfast, London, UK
76 years ago today, on 21 October 1949, Polish coal and ore freighter SS Soldek entered service for Polska Żegluga Morska.
Now a museum ship at Narodowe Muzeum Morskie w Gdansku, Gdansk, Poland.
82 years ago today, on 20 October 1943, Harbour Defence Motor Launch HMS Medusa was launched at R A Newman and Sons in Hamworthy, Poole, Dorset, UK.
Now a museum ship in Gosport, UK
On 20 October 1941, Russian Stalinets-class submarine S-56 was commissioned.
Now a museum ship in Vladivostok, Russia
On 20 October 1965, Danish Søløven-class fast patrol boat Søbjornen (P-512) was commissioned.
Museum ship at Springeren - Maritimt Oplevelsecenter, Aalborg, Denmark
75 years ago today, on 18 October 1950, Tacoma-class frigate USS Gallup (PF-47) was recommissioned in Yokosuka, for service in the Korean War, with Lieutenant Commander William W. Boyd, Jr. in command.
She was transferred to Thailand on 29 October 1951 as HTMS Prasae.
She is now a museum ship at Paknam Prasae, Thailand
On 18 October 1955, Iowa-class battleship USS Wisconsin (BB-64) ran aground on diamond rock on the eastern tip of Manhattan.
Wisconsin Group at Nauticus, Norfolk, VA
107 years ago today, on 17 October 1916, Pennsylvania-class battleship USS Arizona (BB-39) was commissioned at the New York Navy Yard, with Captain John D. McDonald in command.
Pearl Harbor National Memorial, Honolulu, HI

25 years ago today, on 17 October 1998, Essex-class aircaft carrier USS Hornet CV-12 was opened to the public.
USS Hornet - Sea, Air and Space Museum, Alameda, CA