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What was the effective sight radius of World War II naval reconnaissance aircraft?

What was the effective sight radius of World War II naval reconnaissance aircraft?


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At the battle of Midway, the Japanese launched eight reconnaissance aircraft, which failed to find the American fleet in time to take effective action.

I'm not sure what altitude they were operating at, but e.g. the Zero had a service ceiling of 10km, which seems to have been quite typical of contemporary military aircraft. According to http://www.ringbell.co.uk/info/hdist.htm that gives a horizon distance of slightly over 350km. If several aircraft are searching the ocean, each capable of observing a 700km-wide strip, it seems surprising that they failed to find the Americans. But maybe for some reason, the effective visibility radius is less than the mathematical horizon distance.

What was the effective visibility radius?


To the question of the OP, what was the effective visibility radius, there is no straightforward answer: it depends of where you are, what was the weather, what is the training of the pilots to detect and identify ships, etc…

But speaking specifically of Midway's battle, there is an answer:

East of the fighting zone, the weather was : Partly cloudy. Ceiling unlimited in Eastern portion lowering to 1000 feet near warm front. Visibility 6-12 miles. Wind SE 12 knots. Average flying conditions.

North West of the zone, this was: Overcast with rain and showers. Ceiling 600-1000 feet, visibility 2-6 miles. Moderate SW winds ahead of fronts, gentle NW behind cold front. Undesirable flying conditions.

South of the zone, weather was: Partly cloudy. Ceiling mostly unlimited. Visibility 12-20 miles. Gentle Easterly winds. Good flying conditions.

So: Visibility was a little better above Japanese fleet, which did search for more cloudy zones after the first air fights. American aircraft carriers, on the other hand, were truly hidden under clouds and rain. This is a factor for American aircrafts having been able to see the Japanese fleet, and not the contrary. But there are tactical factors as well:

  • The Japanese fleet was already partly localized by the attack of aircrafts from Midway: Americans had better hindsights on where to concentrate their recon flights than Japanese
  • Americans did locate lately the Japanese fleet, and lost entire squadrons than ran out of fuel


Watch the video: Air Reconnaissance and Observation for World War 2 Airmen 1943- Restored (November 2022).

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