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 5
... examples and illustrations which are contained in pages 16 to 31 ; -- But to make it more acceptable to those may who wish to become acquainted with the method of resolving the problems in Navigation arithmetically , I have added the ...
... examples and illustrations which are contained in pages 16 to 31 ; -- But to make it more acceptable to those may who wish to become acquainted with the method of resolving the problems in Navigation arithmetically , I have added the ...
Σελίδα 12
... Example . - As 220 is to 160 so is 110 to 80. Illustration . — On either side of the diagram take 220 , and trace its line till it intersects the line of 160 taken from the other side . At the point of intersection set the index ; then ...
... Example . - As 220 is to 160 so is 110 to 80. Illustration . — On either side of the diagram take 220 , and trace its line till it intersects the line of 160 taken from the other side . At the point of intersection set the index ; then ...
Σελίδα 16
... Example - A ship sails north 3 points east , 243 miles , required the difference of latitude and de- parture . Here the index set on the course 3 points , 243 the distance taken on the index , intersects the line to the meridian 202 for ...
... Example - A ship sails north 3 points east , 243 miles , required the difference of latitude and de- parture . Here the index set on the course 3 points , 243 the distance taken on the index , intersects the line to the meridian 202 for ...
Σελίδα 17
... Example . A ship sails north 2 points east till her departure is 116 miles ; required the distance and diff . of latitude . Here the index set on the course 2 points , the de- parture 116 taken on the equator will give the dis- tance ...
... Example . A ship sails north 2 points east till her departure is 116 miles ; required the distance and diff . of latitude . Here the index set on the course 2 points , the de- parture 116 taken on the equator will give the dis- tance ...
Σελίδα 18
... Example . A ship sails southwesterly 104 miles , and her departure is 64 ; required the course and diff . of latitude . Here the index set to meet the departure 64 , with the distance 104 will give the course 38 deg . ( or s . 38 ° w ...
... Example . A ship sails southwesterly 104 miles , and her departure is 64 ; required the course and diff . of latitude . Here the index set to meet the departure 64 , with the distance 104 will give the course 38 deg . ( or s . 38 ° w ...
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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