The shelling of Port Arthur began on August 7 , 1904 , by a pair of land - based 4.7 - inch ( 120 mm ) guns .
The shelling of Port Arthur was carried on intermittently until August 19 , 1904 .
The shelling of Port Arthur began on August 7 , 1904 , by a pair of land - based 4.7 - inch ( 120 mm ) guns , and was carried on intermittently until August 19 , 1904 .