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 Latitude, and the Longitude by Lunar Observations ... : With an Appendix Containing Methods of Calculating Eclipses of the Sun and Moon ...Edmund M. Blunt, Proprietor and author of the American coast pilot ; John Gray & Company, Print., 1826 - Nautical astronomy - 617 pages |
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Results 1-5 of 68
Page ii
... Cape May , under direction of Capt . JONATHAN COLESWORTHY , and EDMUND BLUNT , hydrographer , in the sloop New Packet . It has also several PLANS of HARBOURS , from actual surveys . of the Mississippi River , extending to New Orleans ...
... Cape May , under direction of Capt . JONATHAN COLESWORTHY , and EDMUND BLUNT , hydrographer , in the sloop New Packet . It has also several PLANS of HARBOURS , from actual surveys . of the Mississippi River , extending to New Orleans ...
Page 49
... Cape or Headland . A Mountain is a rising part of dry land , over - topping the adjacent coun- try , and appearing first at a distance . An Ocean is a vast collection of water , separating continents from one ano- ther , and washing ...
... Cape or Headland . A Mountain is a rising part of dry land , over - topping the adjacent coun- try , and appearing first at a distance . An Ocean is a vast collection of water , separating continents from one ano- ther , and washing ...
Page 50
... Fort PENINSULA 20 Soundmos 3 L P Anchoring Ground LightHouse Rocks aboveWater Print City or Town Isles Isthmais Harbour Rocky Chiffs Cape or Promontory OCEAN 1223 Heeker Eng Ex . III . Required the difference of latitude Ex. Plate V.
... Fort PENINSULA 20 Soundmos 3 L P Anchoring Ground LightHouse Rocks aboveWater Print City or Town Isles Isthmais Harbour Rocky Chiffs Cape or Promontory OCEAN 1223 Heeker Eng Ex . III . Required the difference of latitude Ex. Plate V.
Page 50
... Cape Charles , in between Cape Ann light - house and Lis- bon ? Cape Ann light - house's long . 70 ° 34 ′ W. Lisbon's long . Diff . of long . In miles 9 9 W. 61 25 60 3685 Ex . VII . What is the difference of longi- tude between ...
... Cape Charles , in between Cape Ann light - house and Lis- bon ? Cape Ann light - house's long . 70 ° 34 ′ W. Lisbon's long . Diff . of long . In miles 9 9 W. 61 25 60 3685 Ex . VII . What is the difference of longi- tude between ...
Page 61
... Cape Cod in the latitude of 42 ° 5 ' N. its departure from the meridian of Mount - Desert Rock being supposed to be 84 miles west ; but by reason of . contrary winds , she is obliged to sail on the following courses , viz . South 10 ...
... Cape Cod in the latitude of 42 ° 5 ' N. its departure from the meridian of Mount - Desert Rock being supposed to be 84 miles west ; but by reason of . contrary winds , she is obliged to sail on the following courses , viz . South 10 ...
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Common terms and phrases
anchor angular distance apparent altitude arch azimuth bearing calculation central index centre chronometer circle co-sec co-sine column compass corresponding course sailed degrees diameter Diff difference of latitude difference of longitude Dist divided draw elapsed equal equator error EXAMPLE feet Funchal given gives Greenwich half sum horizon glass hour angle hypotenuse instrument latitude and departure line of numbers logarithm mean meridian altitude method middle latitude miles minutes moon moon's multiplied Nautical Almanac nearly noon object observed altitude obtained parallax parallel passing the meridian perpendicular Plane Sailing points poles quadrant radius 90 refraction right ascension rule sea account secant semi-diameter sextant ship ship's side sine square star subtracted sun's declination sun's lower limb Suppose taken tangent telescope tion TRAVERSE TABLE triangle true altitude true distance tude variation watch wind zenith distance
Popular passages
Page 10 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Page 5 - In a right triangle, the side opposite the right angle is called the hypotenuse, and the other two sides the legs.
Page 187 - 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...
Page 28 - To find the logarithm of a vulgar fraction. RULE. Subtract the logarithm of the denominator from the logarithm of the numerator...
Page 240 - Sear up, or bear away, is to change the course of a ship, in order to make her run before the wind...
Page 13 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Page 205 - 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.
Page 187 - ... take the depth from the under side of the deck plank to the ceiling in the hold, then multiply and divide as aforesaid, and the quotient shall be deemed the tonnage.
Page 6 - CO-SINE of an arch is the sine of the complement of that arch, or of what that arch wants of a quadrant ; thus AH being a quadrant, the arch SH is the complement of the arch AS ; SZ is the sine of the arch SH, or the co-sine of the arch AS. XXI. The VERSED SINE of an arch is that part of the diameter...
Page 91 - The index and horizon glasses must be perpendicular to the plane of the instrument, and their planes parallel to each other, when the index division of the vernier is at 0° on the arc ; and the optical axis of the telescope must be parallel to the plane of the instrument. We shall speak separately of each of these adjustments.