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 8
... 116 , for 86 ° 56 ' read 67 ° 14 ' . 45 , in third line of article 192 , for circle one read one circle , 56 , in fifth line of article 230 , erase the words being its co - sine . DESCRIPTION AND USE OF A DIAGRAM OF NAVIGATION . 3.
... 116 , for 86 ° 56 ' read 67 ° 14 ' . 45 , in third line of article 192 , for circle one read one circle , 56 , in fifth line of article 230 , erase the words being its co - sine . DESCRIPTION AND USE OF A DIAGRAM OF NAVIGATION . 3.
Σελίδα 12
... sine of the course , is always parallel to the equator . If on any course the distance terminates at the equa- tor , the departure is a section of the equator . If the distance ter- minates at a parallel of latitude , the departure is a ...
... sine of the course , is always parallel to the equator . If on any course the distance terminates at the equa- tor , the departure is a section of the equator . If the distance ter- minates at a parallel of latitude , the departure is a ...
Σελίδα 42
... sine of 29 degrees is the sine of 61 degrees . The co - sine is equal to that part of the radius contained between the angular point and the foot of the sine . 172. The VERSED SINE of an arc or angle is that part of the radius which is ...
... sine of 29 degrees is the sine of 61 degrees . The co - sine is equal to that part of the radius contained between the angular point and the foot of the sine . 172. The VERSED SINE of an arc or angle is that part of the radius which is ...
Σελίδα 43
... sine of 29 deg . which being parallel to the side marked equator , its value is there found to be 48 , which is the length or ratio of the sine of 29 deg . to the radius of 100. The other dot- ted straight line which leads from the same ...
... sine of 29 deg . which being parallel to the side marked equator , its value is there found to be 48 , which is the length or ratio of the sine of 29 deg . to the radius of 100. The other dot- ted straight line which leads from the same ...
Σελίδα 44
... sine and the co - sine will in like ratio be increased or diminished ; for if the radius be 200 on the index , the sine of 29 deg . will be 97 , and the co - sine will be 175. In this example the side marked meridian is us- ed as base ...
... sine and the co - sine will in like ratio be increased or diminished ; for if the radius be 200 on the index , the sine of 29 deg . will be 97 , and the co - sine will be 175. In this example the side marked meridian is us- ed as base ...
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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