Squads of small steelclad monitors anchored in a protective cordon around battleships are proposed by an American naval engineer as an effective means of defending the costly dreadnaughts against the aerial bomber. Each of the little monitors would be armed with four to six anti-aircraft guns in a revolving turret. Hard to hit, themselves, they could spray a deadly barrage of shells into the sky against aircraft attacking in any direction. The monitors would be manned by crews of two or three dozen men.