The New American Practical Navigator: Being an Epitome of Navigation : Containing All the Tables Necessary to be Used with the Nautical Almanac, in Determining the Latitutde, and the Longitude by Lunar Observations : and Keeping a Complete Reckoning at Sea : the Whole Exemplified in a Journal, Kept from Boston to Madeira : with an Appendix Containg Methods of Calculating Ex\clipses of the Sun and Moon, and Occultations of the Fixed Stars
E. M. blunt, 1826 - 617 σελίδες
Τι λένε οι χρήστες - Σύνταξη κριτικής
Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
Άλλες εκδόσεις - Προβολή όλων
The New American Practical Navigator: Being An Epitome Of Navigation ...
Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2019
added altitude angle apparent applied arch bearing calculation called central centre circle co-sec co-sine column compass contains correction corresponding course declination departure Diff difference of latitude difference of longitude direction Dist distance divided draw east elapsed equal equator error EXAMPLE extent feet figure fixed given gives glass greater Greenwich half horizon length less limb logarithm longitude lower manner marked mean measured meridian method middle latitude miles minutes moon moon's multiplied Nautical Almanac nearly noon object observation obtained opposite parallax parallel passing perpendicular plane points preceding radius refraction right ascension rule sails ship side sine stand star subtracted sun's Suppose Table taken tangent tion true turned variation watch wind zenith
Σελίδα 5 - In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference. By Theorem II. we have a : b : : sin. A : sin. B.
Σελίδα 185 - If the vessel be double-decked, take the length thereof from the fore part of the main stem, to the after part of the stern post, above the upper deck"; the breadth thereof at the broadest part above the main wales...
Σελίδα 201 - The cause of the tides is the unequal attraction of the sun and moon upon different parts of the earth. For they attract the parts of the earth's surface nearest to them, with a greater force than they do its centre : and attract the centre more than they do the opposite surface. To restore this equilibrium the waters take a spheroidal figure, whose longer axis is directed towards the attracting luminary.
Σελίδα 21 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor ; the remainder will be the logarithm of the quotient EXAMPLE I.
Σελίδα 237 - Broadside; a discharge of all the guns on one side of a ship, both above and below.
Σελίδα 201 - ... near the longitude of Sumatra and Java. In the tract between Sumatra and the African coast, and from 3° of south latitude, quite northward to the Asiatic coast, including the Arabian Sea and the Bay of Bengal, the monsoons blow from October to April on the NE and from April to October on the SW In the former half year, the wind is more steady and gentle, and the weather clearer than in the latter six months. In the Red Sea the winds blow nearly nine months of the year from the southward, that...