Cugle's Practical NavigationDutton, 1926 - 351 trang |
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20h Corr A. M. at ship abeam Arcturus azimuth Bowditch Chron chronometer CIRCLE DISTANCE Comp Cosec Cosine Cotangent course and distance D. R. position days D. R. Dest Dip 36 ft Dist Distance Difference Lat error and deviation Ex-Mer fast Find G. A. T. Eq G. C. T. Sun's Declination G. S. T. Long Greenwich Civil Haversine hour angle Index Error index number Interval latitude at sight longitude arrived meridian altitude minutes Moon's R. A. Oh Corr Oh G. T. Corr Parallax point in Lat Position Line Rate read 10h read 2h Required error Required Lat Required latitude Required longitude right ascension rules S. T. Oh G. T. Secant of Course Second Obs Second Observation slow Star's steam vessel subtract Sumner Line Sun bore Sun's L. L. Tangent true altitude True Bearing True course W Diff white light Z. D. Dec
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Trang 28 - 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.
Trang 23 - This article only applies to cases where vessels are meeting end on, or nearly end on, in such a manner as to involve risk of collision...
Trang 5 - 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 fixed as to throw the light from right ahead to two points abaft the beam on...
Trang 20 - A vessel which is closehauled on the port tack shall keep out of the way of a vessel which is closehauled on the starboard tack.
Trang 24 - Where by any of these rules one of two vessels is to keep out of the way, the other shall keep her course and speed.
Trang 29 - When a vessel is in distress and requires assistance from other vessels or from the shore the following shall be the signals to be used or displayed by her, either together or separately, namely : In the daytime — First.
Trang 12 - Korea sailing fishing vessels of less than twenty tons gross tonnage shall not be obliged to carry the lower of these two lights. Should they, however, not carry it, they shall show in the same position (in the direction of the lines) a white light, visible at a distance of not less than one sea mile on the approach of or to other vessels.
Trang 16 - ... feet above the hull, one such light, and at or near the stern of the vessel, and at such a height that it shall be not less than fifteen feet lower than the forward light, another such light. The length of a vessel shall be deemed to be the length appearing in her certificate of registry...
Trang 6 - ... 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. Each of these lights shall be of the same construction and character...
Trang 25 - The vessel ahead shall in no case attempt to cross the bow or crowd upon the course of the passing vessel.