International Library of Technology: A Series of Textbooks for Persons Engaged in the Engineering Professions and Trades, Or for Those who Desire Information Concerning Them, Volume 29, Part 2International Textbook Company, 1909 |
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Page xv
... indicated by number of flags in a hoist , §18 , p3 . Cone , ball , and drum ... chronometer errors by , $ 16 , p45 . Stars , Circumpolar , §14 , p6 ... chronometer , §16 , p10 . line , How to obtain a , §16 , p6 . lines , $ 16 ...
... indicated by number of flags in a hoist , §18 , p3 . Cone , ball , and drum ... chronometer errors by , $ 16 , p45 . Stars , Circumpolar , §14 , p6 ... chronometer , §16 , p10 . line , How to obtain a , §16 , p6 . lines , $ 16 ...
Page 10
... stated , the chronometer is a very accurate watch , and , as such , is the product of the highest excellency in workmanship and material . The chronometer is set to indicate Greenwich mean time , and by allowing for its gaining or ...
... stated , the chronometer is a very accurate watch , and , as such , is the product of the highest excellency in workmanship and material . The chronometer is set to indicate Greenwich mean time , and by allowing for its gaining or ...
Page 12
... chronometer drop to its level of its own accord , but carefully let it down until it rests in a horizontal position ... indicate the proper time and then start the instrument in the manner described . 34. Placing a Chronometer . - ...
... chronometer drop to its level of its own accord , but carefully let it down until it rests in a horizontal position ... indicate the proper time and then start the instrument in the manner described . 34. Placing a Chronometer . - ...
Page 14
... shown by the chronometer , first , the original error according to its sign , and then the daily rate multiplied by the number of days elapsed since the original error was determined . The rule to be remembered when applying these data ...
... shown by the chronometer , first , the original error according to its sign , and then the daily rate multiplied by the number of days elapsed since the original error was determined . The rule to be remembered when applying these data ...
Page 16
... chronometer showed 1h 12m 20.5 . By observations taken on October 30 , 1899 , it was found to be 13m 35s slow , and on December 24 , 1899 , 10m 55.5s slow . Find the correct Greenwich mean time . SOLUTION . In this case , the daily rate ...
... chronometer showed 1h 12m 20.5 . By observations taken on October 30 , 1899 , it was found to be 13m 35s slow , and on December 24 , 1899 , 10m 55.5s slow . Find the correct Greenwich mean time . SOLUTION . In this case , the daily rate ...
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Common terms and phrases
apparent noon applied astronomy azimuth bearing celestial body celestial equator celestial pole celestial sphere Change in 1h chronometer indicated circle compass Corr corresponding daily rate dead reckoning Decl Diff earth ecliptic equinox error on Greenwich EXAMPLE 1.-On feet Find the latitude given Greenwich date Greenwich mean Height of eye Hence horizontal parallax hour angle Index error instant of observation instrument interval June latitude local mean mean noon mean sun meridian passage method minutes moon moon's motion Nautical Almanac navigator observed altitude observed body observed meridian altitude observer facing south orbit parallax planet polar distance pole star position prime vertical right ascension semi-diameter sextant ship in longitude ship's sidereal sidereal day signals solar SOLUTION star's subtracted Sumner line sun's lower limb Thur tion transit true altitude true azimuth tude vessel wind zenith distance
Popular passages
Page 10 - In obeying and construing these rules due regard shall be had to all dangers of navigation and collision, and to any special circumstances which may render a departure from the above rules necessary in order to avoid immediate danger.
Page 10 - In every case of collision between two vessels, it shall be the duty of the master or person in charge of each vessel, if and so far as he can do so without serious danger to his own vessel, crew, and passengers...
Page 6 - ... use ; and shall, on the approach of or to other vessels, be exhibited on their respective sides in sufficient time to prevent collision, in such manner as to make them most visible, and so that the green...
Page 2 - ... points abaft the beam on the starboard side, and of such a character as to be visible...
Page 2 - On the starboard side a green light so constructed as to show an unbroken light over an arc of the horizon of...
Page 2 - ... if the length of the tow measuring from the stern of the towing vessel to the stern of the last vessel towed exceeds 600 feet...
Page 10 - When both are running free, with the wind on the same side, the vessel which is to windward shall keep out of the way of the vessel which is to leeward. (e) A vessel which has the wind aft shall keep out of the way of the other vessel.
Page 10 - Every vessel shall, in a fog, mist, falling snow, or heavy rain-storms, go at a moderate speed, having careful regard to the existing circumstances and conditions. A steam vessel hearing, apparently forward of her beam, the fog-signal of a vessel the position of which is not ascertained, shall, so far as the circumstances of the case admit, stop her engines, and then navigate with caution until danger of collision is over.
Page 10 - When two steam vessels are meeting end on, or nearly end on, so as to involve risk of collision, each shall alter her course to starboard, so that each may pass on the port side of the other.
Page 10 - Risk of collision can, when circumstances permit, be ascertained by carefully watching the compass bearing of an approaching vessel. If the bearing does not appreciably change, such risk should be deemed to exist.