Surface observers had to estimate range while targets, shell splashes, and their own ship were all moving, sometimes with the target obscuring overshoots. An aircraft viewed the target and fall of shot from above, giving a much clearer relative correction even without supplying a perfect absolute range. That relative view made it easier to report whether a salvo had fallen short, gone over, or straddled the target. Described here as the Royal Navy's most common aircraft operating around the world, the Fairey IIIF helped battleships use their long-range artillery more effectively through reconnaissance and spotting.
Chapter · 7:07-9:18
Air spotting extends battleship gunnery
An overhead observer could judge shell fall beyond a ship's limited horizon and make long-range naval gunfire more effective.