28th March 1920
Royal Navy submarine M3 with a large 12-inch gun.
"Dr. Jekyll and Mr. Hyde" film released.
Ship Losses:
Crostafels (United Kingdom) The cargo ship ran aground on the Ceiba Bank, off the coast of Cuba. She was later refloated and arrived at Kingston, Jamaica on 5 March.
Moskvityanin (Russia White Movement) Russian Civil War: The Emir Bukharski-class destroyer, sunk in May 1919 and refloated on 10 January 1920 but not repaired, was scuttled by gunfire in the Caspian Sea by ships of the Caspian Flotilla of the White Movement.
Picardie (France) The cargo ship collided with
New London ( United Kingdom) in the North Sea and sank.