## The United States Practical Navigator: In which All the Calculations are Made by Arithmetic |

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2d Course Answer Cape Cod ciphers Compass Complement Courses and Distances degree of longitude Departure in miles Difference of Latitude Difference of Longitude direct Distance Distance and Course Distance corresponding Distance in miles Distance sailed divide the product Example XIX exercise in Middle find the Course find the Departure find the Difference find the Distance found otherwise gitude Given number Gives the Longitude gree of longitude Latitude and Longitude latitude equal Latitude in miles Latitude of 49 longitude in latitude Longitude in miles Longitude left 30 Longitude of 30 MARTIN ROCHE Mercator's Sailing Meridional Dif Meridional Difference Middle Latitude Sailing Multiply the Departure Multiply the Distance number of miles Parallel Sailing Plane Sailing Points opposite product by 60 Proper Dif Proper Difference quotient refers to Example refers to Question required the Distance Required the latitude Required the number Table of Miles Table of Points terminate evenly Traverse Sailing