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 3
... considered a substitute for that stand- ard work ; on the contrary its object is to render that work more extensively useful , by exciting the attention of all persons to the general subject of Navigation , by a system the most easy and ...
... considered a substitute for that stand- ard work ; on the contrary its object is to render that work more extensively useful , by exciting the attention of all persons to the general subject of Navigation , by a system the most easy and ...
Σελίδα 13
... considered a globe . 34. Every place or point on the earth , is designated by its latitude and its longitude . 35. Latitude commences at 0 on the equator , and is counted on a meridian , 90 ° north , to the north pole , and 90 ° south ...
... considered a globe . 34. Every place or point on the earth , is designated by its latitude and its longitude . 35. Latitude commences at 0 on the equator , and is counted on a meridian , 90 ° north , to the north pole , and 90 ° south ...
Σελίδα 19
... considered a globe , on which the meridians all meet at the poles . * When the numbers given are too small for convenient operation , substitute larger ones . Thus for 13 take 130 and the subdivisions will be tenths . The operations ...
... considered a globe , on which the meridians all meet at the poles . * When the numbers given are too small for convenient operation , substitute larger ones . Thus for 13 take 130 and the subdivisions will be tenths . The operations ...
Σελίδα 22
... considered a globe , as in parallel sailing . 80. It is compounded of plane and of parallel sailing , the middle latitude being substituted as an artificial parallel , by which the departure , found by the rules in plane sailing , is ...
... considered a globe , as in parallel sailing . 80. It is compounded of plane and of parallel sailing , the middle latitude being substituted as an artificial parallel , by which the departure , found by the rules in plane sailing , is ...
Σελίδα 25
... considered as an extended plane , infinite in length , 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 ...
... considered as an extended plane , infinite in length , 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 ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
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