Manual of navigation, 71권James Maclehose, 1880 - 112페이지 |
도서 본문에서
15개의 결과 중 1 - 5개
페이지
... error of only twenty seconds in the Lunar distance will give a corresponding error of about ten minutes of longitude . As books of some sort are almost indispensable , a list of the best modern works on various analogous subjects is ...
... error of only twenty seconds in the Lunar distance will give a corresponding error of about ten minutes of longitude . As books of some sort are almost indispensable , a list of the best modern works on various analogous subjects is ...
17 페이지
... Error of the Compass is the angle the compass needle makes with the true meridian . 46. True Course is the angle a ship's track makes with the true meridian . 47. Magnetic Course is the angle a ship's track makes with the magnetic ...
... Error of the Compass is the angle the compass needle makes with the true meridian . 46. True Course is the angle a ship's track makes with the true meridian . 47. Magnetic Course is the angle a ship's track makes with the magnetic ...
22 페이지
... error is thus reduced to a very small amount . • To correct a quadrantal error of 5 or 6 degrees , accord- ing to the Astronomer Royal's method , a 10 - inch compass of ordinary construction would require about two tons of soft iron ...
... error is thus reduced to a very small amount . • To correct a quadrantal error of 5 or 6 degrees , accord- ing to the Astronomer Royal's method , a 10 - inch compass of ordinary construction would require about two tons of soft iron ...
24 페이지
... error , which has maximum value on the East and West courses , and vanishes on the North and South courses . This error is due to horizontal force produced by magnetism , induced by force perpendicular to the deck . It is towards the ...
... error , which has maximum value on the East and West courses , and vanishes on the North and South courses . This error is due to horizontal force produced by magnetism , induced by force perpendicular to the deck . It is towards the ...
25 페이지
... error , which has equal maximum value when the ship's head is North or South , and is zero when the ship's head is East or West , by partially counterbalancing the component force on the compass , perpendicular to the ship's deck ...
... error , which has equal maximum value when the ship's head is North or South , and is zero when the ship's head is East or West , by partially counterbalancing the component force on the compass , perpendicular to the ship's deck ...
자주 나오는 단어 및 구문
angle apparent atmosphere azimuth barometer binnacle blue Blue Ensign boat broken water celestial object centre chart chronometer circle clouds collision column correct magnetic bearing CYCLONES Declination decn degrees deviation Diagram Diff difference of longitude direction distant object earth east or west easterly equal equator fall feet Flinders-bar foretells fine weather glass Greenwich heeling height of eye horizon hour inches knots land latitude life-boats Long LONGITUDE BY CHRONOMETER Magnetic Course magnetic hemisphere mercury meridian meridian altitude miles minutes moon Nautical Almanac needle noon North magnetic pole north or south north point northern hemisphere oars observed altitude parallel parallel sailing placed Polar pole port position rain Right Ascension rise Royal Naval Reserve rule running S.-diar sailing ship sextant ship's head Ships under Steam shore side signals sky foretells wind standard compass starboard steam ship steered stern subtract surf tide True altitude Variation vertical line vessel
인기 인용구
88 페이지 - ... abaft the beam on the port side ; and of such a character as to be visible on a dark night, with a clear atmosphere, at a distance of at least two miles.
93 페이지 - ... other; in other words, to cases in which, by day, each vessel sees the masts of the other in a line, or nearly in a line, with her own; and by night, to cases in which each vessel is in such a position as to see both the side-lights of the other.
92 페이지 - When both are running free, with the wind on different sides, the vessel which has the wind on the port side shall keep out of the way of the other.
95 페이지 - Nothing in these rules shall exonerate any ship, 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 look-out, 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.
98 페이지 - A gun or other explosive signal fired at intervals of about a minute. 2. The International Code signal of distress indicated by NC 3.
90 페이지 - ... in a globular lantern of not less than eight inches in diameter, and so constructed as to show a clear uniform and unbroken light visible all round the horizon at a distance of at least one mile.
95 페이지 - 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.
96 페이지 - If he fails so to do, and no reasonable cause for such failure is shown, the collision shall, in the absence of proof to the contrary, be deemed to have been caused by his wrongful act, neglect, or default.
98 페이지 - AT NIGHT 1. A gun fired at intervals of about a minute. 2. Flames on the vessel (as from a burning tar barrel, oil barrel, etc.). 3. Rockets or shells, bursting in the air with a loud report and throwing stars of any color or description, fired one at a time at short intervals.
88 페이지 - ... from right ahead to two points abaft the beam on the port side, and of such a character as to be visible at a distance of at least two miles.