Long’s New Course Finder for Gyro and Magnetic Compasses by Clarence E. Long is an intriguing navigational guide that deviates from the traditional terminology of “port” and “starboard” helms. Instead, it introduces the concept of right and left rudder.

Clarence E. Long (1873-1945) created this comprehensive course-finding resource, likely in the late 1930s

The manuscript is housed in a thick notebook-style binder made of black leatherette, secured with brass screws. With 244 pages, it provides numerous maps and some color illustrations. The guide specifically aids navigation on the Great Lakes and inland waterways of North America. This innovative approach to compass terminology reflects Long’s expertise and unique perspective. While the traditional terms remain widely used, Long’s alternative system adds an interesting twist to maritime navigation.

Rare book in excellent condition. No damage, writing or notation found in the book, other than the owners name on the protective "outer" binder pages of the manual (not on the manual content).

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