Description and Use of a Diagram of Navigation: By which All Problems in Plane, Traverse, Parallel, Middle Latitude and Mercator's Sailing May be Instantly and Accurately Resolved. Adapted to the Capacity of All who Know the Use of Figures. Designed as an Easy Introduction, by Sensible Demonstration, to the Principles, and the Practice of Navigation. With a Diagram EngravedFellowes & Simpson, 1822 - 4 σελίδες |
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Σελίδα 2
... historical and other prints . " JOHN MUSSEY , Jun . Clerk of the District Court of Maine . A true copy as of record - Attest , JOHN MUSSEY , Jun . Clerk D. C. M. PREFACE . SINCE the discovery of the western continent by.
... historical and other prints . " JOHN MUSSEY , Jun . Clerk of the District Court of Maine . A true copy as of record - Attest , JOHN MUSSEY , Jun . Clerk D. C. M. PREFACE . SINCE the discovery of the western continent by.
Σελίδα 14
... true in all operations regarding the reckoning ; which is corrected by nautical astronomy as the opportunities for ob- servations of the heavenly bodies afford . PLANE PLANE SAILING . 48. In plane sailing no regard is had to the spheri ...
... true in all operations regarding the reckoning ; which is corrected by nautical astronomy as the opportunities for ob- servations of the heavenly bodies afford . PLANE PLANE SAILING . 48. In plane sailing no regard is had to the spheri ...
Σελίδα 19
... true difference of latitude and departure made by all the courses ; and with this diff . of lat . and departure , the direct course and distance is found , by case 6 , plane sailing . Example . — A ship sails the following courses and ...
... true difference of latitude and departure made by all the courses ; and with this diff . of lat . and departure , the direct course and distance is found , by case 6 , plane sailing . Example . — A ship sails the following courses and ...
Σελίδα 25
... and in breadth equal to the earth's circumference at the equator . 91. This projection was invented in 1566 by Gerard Mercator ; its object is to represent on a plane the 4 true bearing or course from one place to another as 25.
... and in breadth equal to the earth's circumference at the equator . 91. This projection was invented in 1566 by Gerard Mercator ; its object is to represent on a plane the 4 true bearing or course from one place to another as 25.
Σελίδα 26
... true bearing or course from one place to another as it is on a globe . 92. In this projection the meridians are represented by straight parallel lines ; by which the degrees of longitude in high latitudes are artificially expanded , be ...
... true bearing or course from one place to another as it is on a globe . 92. In this projection the meridians are represented by straight parallel lines ; by which the degrees of longitude in high latitudes are artificially expanded , be ...
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arc of latitude arc or angle chord circle circumference co-sine co-tangent contiguous angle course 3 points course 3 pts course 38 deg COURSE and DEPARTURE Course and Diff course and distance course sailed curve line departure 84 Diagram of Navigation difference of lati difference of latitude difference of longitude direct course dist DISTANCE and DEPARTURE distance sailed ence of longitude Example Example.-A ship sails find the COURSE find the DISTANCE give the course give the diff give the distance Given both LATITUDES Given-one LATITUDE index remaining index set index to meet meet the difference Mercator's sailing merid meridian distance meridional difference middle lat parallel sailing plane sailing proper diff radius be equal required the course right line drawn right-angled plane triangle Rule Rule.-Set the index secant Set the index ship in lat side as radius side marked equator tance tangent traverse table tude