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 15
... be exactly contained within the arc of a semi - circle whose subtense , or chord is equal to the distance sailed , on any oblique course . 63. In plane sailing there are six cases . CASE 1 . 64. Given the cOURSE and DISTANCE , 15.
... be exactly contained within the arc of a semi - circle whose subtense , or chord is equal to the distance sailed , on any oblique course . 63. In plane sailing there are six cases . CASE 1 . 64. Given the cOURSE and DISTANCE , 15.
Σελίδα 42
... CHORD of an arc is a right line drawn from one extremity of the arc to the other . 170. The SINE of an arc or angle is a right line drawn from one extremity of the arc , perpendicularly upon the radius , or diameter which is drawn to ...
... CHORD of an arc is a right line drawn from one extremity of the arc to the other . 170. The SINE of an arc or angle is a right line drawn from one extremity of the arc , perpendicularly upon the radius , or diameter which is drawn to ...
Σελίδα 43
... chord to the arc of 90 deg . and a line drawn from one end of this arc to any point of it will be a chord to that section of it which it subtends .-- On the side marked meridian , and between the divis ions 87 and 88 is a fine dotted ...
... chord to the arc of 90 deg . and a line drawn from one end of this arc to any point of it will be a chord to that section of it which it subtends .-- On the side marked meridian , and between the divis ions 87 and 88 is a fine dotted ...
Σελίδα 45
... chord of 60 deg . and half the secant of 60 deg . are each equal to the radius which describes the circle . 192. The chord , sine , tangent , and secant of an arc in one circle is to the chord , sine , tangent , and secant of the same ...
... chord of 60 deg . and half the secant of 60 deg . are each equal to the radius which describes the circle . 192. The chord , sine , tangent , and secant of an arc in one circle is to the chord , sine , tangent , and secant of the same ...
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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