Nautical Astronomy, Latitude, Longitude & Azimuth, Sumner's Method, Marcq St. Hilaire's Method, Ocean Meteorology, International Rules & SignalsInternational textbook Company, 1908 - 586 pages |
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Common terms and phrases
amplitude apparent noon astronomical calculated celestial body celestial equator celestial sphere Change in 1h chart Chron chronometer compass Computation Corr correct corresponding cosec daily rate dead reckoning Decl declination Diff earth ecliptic equator error on Greenwich EXAMPLE EXAMPLE.-On feet Find the latitude Greenwich date Greenwich mean Height of eye Hence Hilaire's method horizon hour angle Index error instant of observation intercept interval latitude latitude and longitude line of position local mean Long mean noon mean sun meridian altitude meridian passage miles minutes moon moon's Nautical Almanac navigator observed altitude observed body obtained parallax planet pole Position Line prime vertical right ascension second sight semi-diameter sextant ship ship's sidereal signals SOLUTION star subtracted Sumner line Sumner's method sun's lower limb Table Thur tion true altitude true azimuth true position tude vessel wind
Popular passages
Page 22 - 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 20 - When two sailing vessels are approaching one another, so as to involve risk of collision, one of them shall keep out of the way of the other as follows, viz.
Page 22 - Nothing in these rules shall exonerate any vessel, or the owner or master or crew thereof, from the consequences of any neglect to carry lights or signals, or of any neglect to keep a proper lookout, or of the neglect of any precaution which may be required by the ordinary practice of seamen, or by the special circumstances of the case.
Page 18 - A vessel under one hundred and fifty feet in length when at anchor shall carry forward, where it can best be seen, but at a height not exceeding twenty feet above the hull, a white light, in a lantern so constructed as to show a clear, uniform, and unbroken light visible all around the horizon at a distance of at least one mile.
Page 23 - 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 15 - ... 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 11 - ... points abaft the beam on the starboard side, and of such a character as to be visible...
Page 21 - ... shall be deemed to be an overtaking vessel; and no subsequent alteration of the bearing between the two vessels shall make the overtaking vessel a crossing vessel within the meaning of these rules, or relieve her of the duty of keeping clear of the overtaken vessel until she is finally past and clear.
Page 11 - On the starboard side a green light so constructed as to show an unbroken light over an arc of the horizon of ten points of the compass, so tixcd as to throw the light from right ahead to two points abaft the beam on...
Page 12 - By day she shall carry in a vertical line one over the other, not less than 6 feet apart, where they can best be seen, three shapes not less than 2 feet in diameter, of which the highest and lowest shall be globular in shape and red in color and the middle one diamond in shape and white.