Saving of Distance in Sailing from one to another on the Great Circle

Abstract

In the following sections, we will consider the diffrence between Rhumb line distance and Great Circle distance which we call Saving of Distance D. § 1. Saving of Distance on Parallel Sailing. § 2. Saving of Distance on Composite Great Circle Sailing. § 3. Great Circle Distance on Middle Latitude for the same D. Long. § 4. Saving of Distance for the short D. Long. § 5. Saving of Distance for the sfort D. Lat. § 6. Saving of Distance for the short distance Principal Results. (1) Saving of Distance on Parallel Sailing for the same D. Long. Take the maximum value at Lat, 50°〜55°. (2) Within about 10' is Saving of Distance on the case of Composite Great Circle Track taking Lat, about 1°20' lower then vertex Latitude as Limiting Latitude.