Newton's Guide to the Board of trade examinations of masters and mates of sailing ships and steam ships, in navigation and nautical astronomy |
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Página 46
If P.M. To the left - hand side of the hour angle put the same day as at ship . This gives Apparent Time at the ship . app . TO FIND THE MEAN TIME AT SHIP . - Below the time at ship place the corrected equation of time , and apply it as ...
If P.M. To the left - hand side of the hour angle put the same day as at ship . This gives Apparent Time at the ship . app . TO FIND THE MEAN TIME AT SHIP . - Below the time at ship place the corrected equation of time , and apply it as ...
Página 47
The Long . is West if the Greenwich time is more than the mean time at ship . ... Time by a chronometer , February 6a 7h 2m os which was im os fast for mean noon at Greenwich on November 10th , 1884 , and on January 2nd , 1885 , it was ...
The Long . is West if the Greenwich time is more than the mean time at ship . ... Time by a chronometer , February 6a 7h 2m os which was im os fast for mean noon at Greenwich on November 10th , 1884 , and on January 2nd , 1885 , it was ...
Página 48
10th , P.M. , at Ship ; in Latitude 49 ° 13 ' S. altitude of the sun's lower limb was 22 ° 28 ′ 30 ′′ . The observed Height of eye 19 feet . Time by a chronometer 10d 7h 31m 45s which was 12m 168 slow for mean noon at Greenwich June ...
10th , P.M. , at Ship ; in Latitude 49 ° 13 ' S. altitude of the sun's lower limb was 22 ° 28 ′ 30 ′′ . The observed Height of eye 19 feet . Time by a chronometer 10d 7h 31m 45s which was 12m 168 slow for mean noon at Greenwich June ...
Página 49
July 4th , P.M. , at Ship ; in Latitude 39 ° 47 ′ S. The observed altitude of the sun's lower limb was 13 ° 2 ' 30 " . Height of eye 20 feet . Time by a chronometer 3d 23h 7m 25s which was correct for mean noon at Greenwich February ...
July 4th , P.M. , at Ship ; in Latitude 39 ° 47 ′ S. The observed altitude of the sun's lower limb was 13 ° 2 ' 30 " . Height of eye 20 feet . Time by a chronometer 3d 23h 7m 25s which was correct for mean noon at Greenwich February ...
Página 56
July 7 , P.M. , Mean Time at Greenwich 6d 13h 42m 368 ; in Latitude 51 ° 30 ' S .; Longitude 172 ° 32 ′ 30 " E. The sun's ... the apparent time at ship from 24h ; but if P.M. at ship , the apparent time at ship is the time from noon .
July 7 , P.M. , Mean Time at Greenwich 6d 13h 42m 368 ; in Latitude 51 ° 30 ' S .; Longitude 172 ° 32 ′ 30 " E. The sun's ... the apparent time at ship from 24h ; but if P.M. at ship , the apparent time at ship is the time from noon .
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Términos y frases comunes
ADDITIONAL FOR MASTER ANSWERS apparent applied Bearing of distant bore by compass centre Chart Chronometer showed Comp Compass bearings Compass courses correct magnetic bearing correct magnetic courses course to steer current set Declination Dist distance distant object dividers East error EXAMPLE eye 19 feet eye 20 feet feet Find the course Find the ship's following courses given Greenwich height of eye July lead line of position Long Longitude MATE Mean miles per hour North object by Standard observed altitude observed meridian altitude parallel pass port question required the deviation Required the Latitude Required the true result ship ship's head Ship's Head Bearing ship's position slow Standard Compass Standard object subtract Sumner's Method sun's bearing sun's lower limb supposing the variation tide true azimuth West Winds ΙΟ
Pasajes populares
Página 76 - 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.
Página 7 - Having determined the deviation with the ship's head on the various points of the compass, how do you know when it is easterly and when westerly ? 4.
Página 146 - Compass to make the following courses, correct magnetic. 9. Supposing you have steered the following courses by the Standard Compass, find the correct magnetic courses made from the above deviation table.
Página 138 - Ship's Head by Standard Compass. Bearing of distant object by Standard Compass. Deviation required. Ship's Head by Standard Compass.
Página 8 - Compasses of iron ships are more or less affected by what is termed the heeling error ; on what courses does this error vanish, and on what courses is it the greatest ? 16. State to which side of the ship, in the majority of cases, is the North point of the Compass drawn in the Northern hemisphere ; and what effect has it on the assumed position of the ship when she is steering on Northerly, and also on Southerly courses ? . •. . . 17. The effect being as you state, on what courses would...
Página 13 - ... are the usual indications of a ship being on the line of progression of the centre of a Cyclone ? 5. What are the usual indications that a ship is (a) approaching the centre of a Cyclone ; fb) receding from it?
Página 8 - Q. 15. The compasses of iron ships are more or less affected by what is termed the heeling error. On what courses does this error vanish, and on what courses is it the greatest ? A.
Página 9 - Northerly, and also on Southerly courses ? 17. The effect being as you state, on what courses would you keep away, and. on what courses would you keep closer to the wind, in order to make good a given Compass course ? 18.
Página 147 - Tenby, by reckoning took a cast of the lead. Required the correction to be applied to the depth obtained by the lead line before comparing it with the depth marked on the Chart.
Página 13 - And suppose that the wind during the passage of the same cyclone were found to change toward the* , what would be the ship's position with reference to the line of progression of the centre of the cyclone, and what action would you take ? 8.
Información bibliográfica
| Título | Newton's Guide to the Board of trade examinations of masters and mates of sailing ships and steam ships, in navigation and nautical astronomy |
| Autor | John Newton |
| Edición | 7 |
| Editor | J. Newton, 1884 |
| Procedencia del original | Universidad de Oxford |
| Digitalizado | 14 Jun. 2007 |
| Largo | 176 páginas |
| Exportar cita | BiBTeX EndNote RefMan |