"sunk by shore batteries" . "by gunfire and torpedoes" . "1 light cruiser" . "turned back" . "*German invasion forcedelayed" . . . "serious resistance" . "407" . "more determined resistance" . "gives the order to fire" . "Battle of Dr\u00F8bak Sound" . "Bl\u00FCcher was sunk" . "2 protection guns" . "Germany" . . . "was sunk" . "the sinking" . "sufficiently delayed" . . . "sinking" . . . . . . "1 torpedo boat" . "opposed by Oscarsborg Fortress" . . "18 coastal guns" . . . "1940-04-09" . . . . "Norwegian victory" . "sunk by the fortress" . . "2 minesweepers" . . "Sunk in battle 1940" . "1 fortress" . . . "None" . . "multiple artillery and torpedo hits" . "coastal defenses had sunk ''Bl\u00FCcher'' while passing through the Sound" . "a battle" . . "battle of Dr\u00F8bak Sound" . "surface action" . . "sunk" . "2 heavy cruisers" . "1 torpedo battery" . . . . "* Evacuation of theNorwegian Parliament,Royal Family, andgold reserve" . "had sunk" . "Norway" . . "11 anti-aircraft guns" . "Battle of Dr\u00F8bak Sound" . .