A Complete Epitome of Practical Navigation, and Nautical Astronomy: Containing All Necessary Instructions for Keeping a Ship's Reckoning at Sea, Volumen1Imray, Laurie, Norie and Wilson, 1917 - 595 páginas |
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Página 1
... course or direction the wind or weather will permit ; and Navigation Proper ( the part we intend to treat of in the present work ) , which comprehends those methods by which a mariner determines at any time the situation of his vessel ...
... course or direction the wind or weather will permit ; and Navigation Proper ( the part we intend to treat of in the present work ) , which comprehends those methods by which a mariner determines at any time the situation of his vessel ...
Página 101
... course and distance from Cape St. Vincent to the east end of the Island of Madeira . Lay the edge of the parallel rulers over the two places , and then slide them to the nearest compass , when it will be seen that the true course is S ...
... course and distance from Cape St. Vincent to the east end of the Island of Madeira . Lay the edge of the parallel rulers over the two places , and then slide them to the nearest compass , when it will be seen that the true course is S ...
Página 103
... course and distance is made as correctly as possible until a second bearing of the same object is taken ; there should be an alteration of not less than 60 ° in the two bearings . The first line of bearing is laid down on the chart from ...
... course and distance is made as correctly as possible until a second bearing of the same object is taken ; there should be an alteration of not less than 60 ° in the two bearings . The first line of bearing is laid down on the chart from ...
Página 104
... course to make good ; at right angles to this line and from the centre of the circle draw another line until it cuts the course , and where the two lines cut will be the position of the ship when abeam , provided she has made that ...
... course to make good ; at right angles to this line and from the centre of the circle draw another line until it cuts the course , and where the two lines cut will be the position of the ship when abeam , provided she has made that ...
Página 105
... course of the ship and the distance sailed from a known position and then finding her actual position by cross bearings . The course and distance from the assumed position to the actual position will be the set and drift . In the figure ...
... course of the ship and the distance sailed from a known position and then finding her actual position by cross bearings . The course and distance from the assumed position to the actual position will be the set and drift . In the figure ...
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Otras ediciones - Ver todas
A Complete Epitome of Practical Navigation, and Nautical Astronomy ... John William Norie,J. W. Saul Sin vista previa disponible - 2018 |
A Complete Epitome of Practical Navigation, and Nautical Astronomy ... John William Norie,William Henry Rosser Sin vista previa disponible - 2018 |
A Complete Epitome of Practical Navigation, and Nautical Astronomy ... John William Norie,J W Saul Sin vista previa disponible - 2022 |
Términos y frases comunes
apparent azimuth bearing centre chart chronometer circle co-latitude Co-sec column compass course Corr correction course and distance dead reckoning decl declination departure deviation Diff difference of latitude difference of longitude direction dist distance run earth east equal equator equinoctial Example feet given Greenwich date Greenwich mean heavenly body horizon hour angle index error interval leeway logarithm magnetic course meridian altitude middle latitude miles millibars moon moon's Nautical Almanac noon Northern Hemisphere observed altitude parallax parallel parallel sailing plane plane sailing point of Aries polar distance pole port position prime vertical refraction required the latitude right angles right ascension sailing set and drift sextant ship ship's head side sidereal star subtract tide Traverse Table triangle true altitude true course variation vernier vertical wind zenith distance ΙΟ
Pasajes populares
Página 223 - January 31, February 28, March 31, April 30, May 31, June 30, July 31, August 31, September 30, October 31, November 30, December 31.
Página 37 - The square described on the hypothenuse of a right-angled triangle is equivalent to the sum of the squares described on the other two sides.
Página 221 - Ascension, and the interval between the departure of any meridian from the mean Sun and its succeeding return to it is the duration of the mean solar day. Clocks and chronometers are adjusted to mean solar time ; so that a complete revolution (through 24 hours) of the hour hand of...
Página 26 - The circumference of a circle is divided into 360 equal parts, called degrees; each degree into 60 minutes ; each minute into 60 seconds.
Página 199 - The Ram, the Bull, the heavenly Twins, And next the Crab the Lion shines, The Virgin and the Scales ; The Scorpion, Archer, and He-goat, The Man that holds the watering-pot, And Fish with glittering tails.
Página 21 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.
Página 73 - The shortest DISTANCE between two points on the surface of a sphere is the arc of a great circle passing through those points.
Página 36 - Jf a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another ; and the exterior angle equal to the interior and opposite upon the same side ; and likewise the two interior angles upon the same side together equal to two right angles.
Página 161 - The relative effects of these two bodies on the oceanic waters are directly as their mass, and inversely as the square of their distance...
Página 36 - IF a straight line falling upon two other straight lines makes the exterior angle equal to the interior and opposite upon the same side of the line ; or makes the interior angles upon the same side together equal to two right angles ; the two straight lines shall be parallel to one another.