Sternlog
A sternlog is a record of the ship's speed and distance traveled, as well as the direction and strength of the wind, maintained by the ship's navigator. It is typically recorded every hour and is used to calculate the ship's position and progress. The sternlog is an important tool for navigation, especially in the absence of modern technology. It is also used to determine the ship's speed and fuel consumption, and to monitor the performance of the ship's engines. The sternlog is usually kept in a book or on a chart, and is an essential part of the ship's logbook.
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