. . . "1908-10-19" . "''Osfriesland''" . . . . . . . . . "SMS Ostfriesland" . "''Ostfriesland''" . "1920-04-07" . "1920-09-20" . "39.2624" . . . "1920-04-07" . "1921" . "Ceded to United States, 1920" . . "1911-08-01" . "Ostfriesland" . "Sunk as a target by aircraft, 21 July 1921" . . "USS ''Ostfriesland''" . . "demonstration of air power" . "1911-09-22" . "SMS Ostfriesland" . "1918-12-16" . . . . . "1909-09-30" . "SMS ''Ostfriesland''" . "8.94" . "28.5" . . . "Sinking of the battleship Ostfriesland" . "167.2" . .