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 18
... done , the several columns are ad per columns . up , and the less latitudes taken from the greater , and the less 18 Traverse Sailing Traverse table to find the course and difference of to find the course and distance.
... done , the several columns are ad per columns . up , and the less latitudes taken from the greater , and the less 18 Traverse Sailing Traverse table to find the course and difference of to find the course and distance.
Σελίδα 19
... greater , and the less departures from the greater . The remainders will shew the 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 ...
... greater , and the less departures from the greater . The remainders will shew the 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 ...
Σελίδα 37
... greater , and their differ ence is the latitude , and of the same name with the greater . 133. The sun's declination is given in the nautical Almanac for every day at noon , at Greenwich . If the longitude of the ship be great from ...
... greater , and their differ ence is the latitude , and of the same name with the greater . 133. The sun's declination is given in the nautical Almanac for every day at noon , at Greenwich . If the longitude of the ship be great from ...
Σελίδα 43
... greater , or less than a right angle or 90 deg . - if greater it is called obtuse - if less it is called acute . 187. As great use is made of the chords , sines , tan- gents and secants , it may aid the learner to refer to the diagram ...
... greater , or less than a right angle or 90 deg . - if greater it is called obtuse - if less it is called acute . 187. As great use is made of the chords , sines , tan- gents and secants , it may aid the learner to refer to the diagram ...
Σελίδα 45
... greater than a right angle . 199. An angle in a segment greater than a semicir- cle is less than a right angle . 200. An angle at the circumference of a circle is half the angle at the centre , standing on the same arc ; and it is ...
... greater than a right angle . 199. An angle in a segment greater than a semicir- cle is less than a right angle . 200. An angle at the circumference of a circle is half the angle at the centre , standing on the same arc ; and it is ...
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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