They are set on the great circle course from San Francisco to Guadalcanal.
2.
On 5 June 1922, Beaver sailed for the west coast via the " Great Circle Course " across the central Pacific.
3.
This was not the shortest course that would have required more complicated navigation to fly a great circle course but the difference over the trans-Tasman flight was not prohibitive.
4.
Warsaw is about from the UK on the great circle course, but in order to avoid the defences of the Reich a detour would be near to 1100, and a return journey of was out of the question.
5.
By thus following the great circle course, long one of the goals of airmen, the distance from southern California, where much of the U . S . aircraft industry was concentrated, to Iceland was reduced by almost, with no leg of the journey longer than.
6.
I think the analogy of the airliner is appropriate : Airplane pilots basically aim their plane at the airport and don't adjust much during the length of the trip : autopilot is capable of keeping the plane on the correct course, usually a fairly easy-to-calculate great circle course ( the Earth equivalent of a straight line ), and the pilots only need to be involved in the take off and landing portions.
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