A guide book to the Local marine board examination. The ordinary examination. [With] The requisite elements from the Nautical almanac for 1865, for the exercises in Ainsley's Guide book. [With] The requisite elements from the Nautical almanac for 1887 |
Kirjan sisältä
Tulokset 1 - 5 kokonaismäärästä 59
Sivu 18
... of logarithms . In the common system of logarithms unity is assumed to be the logarithm of 10 ; that is , 10 is the constant base . All the logarithms registered in the Tables commonly used , are indices of the 18 On Logarithms .
... of logarithms . In the common system of logarithms unity is assumed to be the logarithm of 10 ; that is , 10 is the constant base . All the logarithms registered in the Tables commonly used , are indices of the 18 On Logarithms .
Sivu 68
... constant angle with the meridian , the advantages of such a selection being that the seaman is not required to alter his course . It would seem desirable to take the shortest route on the voyage , and this is the arc of a great circle ...
... constant angle with the meridian , the advantages of such a selection being that the seaman is not required to alter his course . It would seem desirable to take the shortest route on the voyage , and this is the arc of a great circle ...
Sivu 69
... constant angle which the rhumb curve joining the two points makes with the meridians , or it is the direction in which a ship sails from one place to another , this direction being referred to the meridian , which lies truly north or ...
... constant angle which the rhumb curve joining the two points makes with the meridians , or it is the direction in which a ship sails from one place to another , this direction being referred to the meridian , which lies truly north or ...
Sivu 70
... constantly varying in magnitude . The element we are considering is called the departure , and is arrived at as follows : On the rhumb curve A F joining the two places A and F take a number of points equidistant from one another ...
... constantly varying in magnitude . The element we are considering is called the departure , and is arrived at as follows : On the rhumb curve A F joining the two places A and F take a number of points equidistant from one another ...
Sivu 93
... constant attention of the navigator should be devoted to ascertain its errors . ADJUSTMENTS OF THE COMPASS . 103. ( 1. ) The direction of the magnetism of the needle or the " mag- netic axis " should be in a line along the middle of the ...
... constant attention of the navigator should be devoted to ascertain its errors . ADJUSTMENTS OF THE COMPASS . 103. ( 1. ) The direction of the magnetism of the needle or the " mag- netic axis " should be in a line along the middle of the ...
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A Guide Book to the Local Marine Board Examination. the Ordinary Examination ... Thomas Liddell Ainsley Esikatselu ei käytettävissä - 2015 |
Yleiset termit ja lausekkeet
A.M. at ship altitude sun's L.L. angle bearing by compass Bearing of Distant central line centre chart chronometer showed common logarithms compass course correct magnetic bearing correct magnetic course course and distance course to steer curve decl declination departure diff difference of latitude difference of longitude dist Distant Object East equator error of compass feet find the course Greenwich date Greenwich mean height of eye high water hour index correction index error logarithms longitude by chronometer mean noon meridian meridian altitude miles Nautical Almanac noon at Greenwich NORIE North Object by Standard observed altitude sun's parallel Parallel Sailing Plane Sailing pole quadrant Raper required the latitude right ascension Rule sailing sextant ship's head ship's position sine South Standard Compass Standard Port storm subtract Table tide Tide Tables true alt True altitude true azimuth true bearing true course West wind
Suositut otteet
Sivu 1 - ... unless at least one officer besides the master has obtained and possesses a valid certificate appropriate to the grade of only mate therein or to a higher grade ; and...
Sivu 18 - The LOGARITHM of a number to a given base is the index of the power to which the base must be raised to give the number.
Sivu 375 - In the following table give the correct magnetic bearing of the distant object, and thence the deviation. 8. With the deviation as above, give the courses you would steer by the Standard Compass to make the following courses, correct magnetic :— . . 9.
Sivu 4 - Whoever makes any statement, knowing it to be false, for the purpose of obtaining for himself or for any other person, firm, corporation, or association any advance...
Sivu 8 - ... the sun ; to work the latitude by single altitude of the sun off the meridian ; and be able to use and adjust the sextant by the sun. In Seamanship.
Sivu 7 - A MASTER must be twenty-one years of age, and have been six years at sea, of which one year must have been as First or Only Mate...
Sivu 9 - He will be examined as to his competency to construct jury rudders and rafts ; and as to his resources for the preservation of the ship's crew in the event of wreck. He must possess a...
Sivu 60 - A sphere is a solid, bounded by one continued convex surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains fixed.
Sivu 8 - He must be able to work a day's work complete, correcting the courses for deviation, leeway, and variation. He will be required to find the latitude by meridian altitude of the sun, and the difference of longitude from a given departure by parallel sailing ; also to find the course and distance from one position to another by Mercator's method. He will be required to find the time of high water at a given port, to observe and calculate the amplitude of the sun, and to find the error of the ship's...
Sivu 2 - Consul of the country to which the ship in which the candidate served belonged, or by some other recognised official authority of that country, or by the testimony of some credible person on the spot having personal knowledge of the facts required to be established. Upon application to the...