In other words, standing in the center of the compass and looking toward the circumference, you would find that every true course you Sailed would be three points to the right of the compass course.
"Lectures in Navigation"
Ernest Gallaudet Draper
Under the course just found and opposite the real difference of Latitude, will be found the distance Sailed in the distance column.
"Lectures in Navigation"
Ernest Gallaudet Draper
Add to this the log of the real difference of latitude, and if the result is more than 10, subtract 10. This result will be the log of the distance Sailed.
"Lectures in Navigation"
Ernest Gallaudet Draper