Hand-book to the Local marine board examination [by J. Taylor].1853 |
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Página 11
... chronometers and keep their rates , and find the longitude by them from an observation by 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 ...
... chronometers and keep their rates , and find the longitude by them from an observation by 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 ...
Página 28
... chronometer , 28d Oh 4m 50 % , which had been found 46m 46 % fast on mean time at Greenwich , Nov. 29 , 1853 , and losing 45 daily required the longitude . 10. March 5 , 1854 , A.M. at ship ; lat . by account 33 ° 40′N .: long . 20 ° 1 ...
... chronometer , 28d Oh 4m 50 % , which had been found 46m 46 % fast on mean time at Greenwich , Nov. 29 , 1853 , and losing 45 daily required the longitude . 10. March 5 , 1854 , A.M. at ship ; lat . by account 33 ° 40′N .: long . 20 ° 1 ...
Página 29
... chronometer 15d 6h 0 TM 403 , which had been found 2m 1 · 4s fast on mean time at Greenwich , Jan. 25 , and losing 5 · 5 ° daily : required the longitude . 10. April 21 1854 , A.M. at ship : lat . by account 39 ° 53′N . : long . 6 ° 5 E ...
... chronometer 15d 6h 0 TM 403 , which had been found 2m 1 · 4s fast on mean time at Greenwich , Jan. 25 , and losing 5 · 5 ° daily : required the longitude . 10. April 21 1854 , A.M. at ship : lat . by account 39 ° 53′N . : long . 6 ° 5 E ...
Página 30
... chronometer 284 22h 10m 408 , which was 9m 45.5 fast on mean time at Greenwich , June 8 , and losing 65 daily required the longitude . 10. July 10 , 1854 , A.M. at ship : lat . by account 51 ° 43′N .: long . 30 ° 10 W .: observed ...
... chronometer 284 22h 10m 408 , which was 9m 45.5 fast on mean time at Greenwich , June 8 , and losing 65 daily required the longitude . 10. July 10 , 1854 , A.M. at ship : lat . by account 51 ° 43′N .: long . 30 ° 10 W .: observed ...
Página 31
... chronometer August 31d 23h 58m 49s , which had been found 15m 26s slow on mean time at Greenwich June 23rd , and losing 4'5 daily : required the lon- gitude . 10. Sept. 16 , 1854 , A.M. at ship : lat . by account 42 ° 36'S . : long 137 ...
... chronometer August 31d 23h 58m 49s , which had been found 15m 26s slow on mean time at Greenwich June 23rd , and losing 4'5 daily : required the lon- gitude . 10. Sept. 16 , 1854 , A.M. at ship : lat . by account 42 ° 36'S . : long 137 ...
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Hand-Book to the Local Marine Board Examination [By J. Taylor] Janet Taylor,Trade Board of Local Marine Board Sin vista previa disponible - 2015 |
Términos y frases comunes
3rd cor A.M. at ship apparent course artificial horizon assumed latitude axis line azimuth barometer bearing bill of lading boilers bottomry Cape cargo centre Certificate charter-party Chief Mate chronometer Circle Sailing compass course and distance cross sea cyclone damage dead reckoning Diff Divide double altitude dunnage elapsed engines equator examination eye 18 feet eye 21 feet feet required foggy weather freight is due gong is sounded Greenwich hauling horizon hurricane index error Light Vessel logarithms lunar M. T. at Gr margin Marine Board minutes northern hemisphere observed altitude observed meridian altitude P.M. mean P.M. tides parallel sailing place 2h port semi-circle recurving required the latitude required the true required the variation Second Mate set and drift sextant ship by dead ship's slow on M. T. Steam storm stowed sun's lower limb true dist true latitude true longitude tude valves voyage West
Pasajes populares
Página 60 - London, (the act of God, the queen's enemies, fire, and all and every other dangers and accidents of the seas, rivers, and navigation, of whatever nature and kind soever, excepted,) unto order or to assigns, he or they paying freight for the said goods at 51.
Página 25 - Astronomers, with a view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to the mean or average of all the apparent solar days in a year. An imaginary Sun, called the mean Sun...
Página 40 - ... a bright white light so constructed as to show an unbroken light over an arc of the horizon of 20 points of the compass, so fixed as to throw the light 10 points on each side of the vessel...
Página 12 - If the applicant passes, he will receive a document from the examiner, which will entitle him to receive his certificate of competency from the shipping master at the port to which he has directed it to be forwarded.
Página 44 - Bundles of sheet iron, rods, pigs of copper or iron, or any rough hard substance, should not be allowed to come in contact with bales or bags, or any soft packages liable to be chafed. When mats can be procured, they should be used at the sides for silk, tea, &c 11 — Tar, Turpentine, Rosin, &c.
Página 40 - On the starboard side, a green light so constructed as to show an uniform and unbroken light over an arc of the horizon of 10 points of the compass ; so fixed as to throw the light from right ahead to 2 points abaft the beam...
Página 13 - Mates are made compulsory, the qualifications have been kept as low as possible; but it must be distinctly understood that it is the intention of the Board of Trade to raise the standard from time to time, whenever, as will no doubt be the case, the general attainments of officers in the Merchant Service shall render it possible to do so without inconvenience ; and Officers are strongly urged to employ their leisure hours, when in port, in the acquirement of the knowledge necessary to enable them...
Página 41 - On the port side a red light so constructed as to show an unbroken light over an arc of the horizon of 10 points of the compass, so fixed as to throw the light from right ahead to 2 points abaft the beam on the port side, and of such a character as to be visible at a distance of at least 2 miles.
Página 11 - He must be able to observe, and calculate the amplitude of the sun, and deduce the variation of the compass therefrom. He must know how to lay off the place of the ship on the chart, both by bearings of known objects, and by latitude and longitude. He must be able to...
Página 36 - ... to set the axis of the telescope parallel to the plane of the instrument...