West Coast of India Pilot: From Point Calimere to Cape Monze, Including Ceylon, Pamban Pass, and Palk Gulf

封面
U.S. Government Printing Office, 1920 - 500 頁
 

常見字詞

熱門章節

第 14 頁 - For boarding a wreck, it is recommended to pour oil overboard to windward of her before going alongside, bearing in mind that her natural tendency is always to forge ahead. If she is aground the effect of oil will depend upon attending circumstances.
第 3 頁 - ... found. The chart on largest scale should always be used on account of its greater detail and the greater accuracy with which positions may be plotted on it. Caution in using small-scale charts.
第 2 頁 - Low water is lower than mean low water about half the time, and when a new or full moon occurs at perigee the low water is lower than the average low water of springs. At the equinoxes the spring range is also increased on the coasts of Europe, but in some other parts of the world, and especially in the Tropics, such periodic low tides may coincide more frequently with the solstices. Wind or a high barometer may at times cause the water to fall below even a very low plane of reference. On coasts...
第 13 頁 - Use of Oil for Modifying the Effect of Breaking Waves. — Many experiences of late years have shown that the utility of oil for this purpose is undoubted, and the application simple. The following may serve for the guidance of seamen, whose attention is called to the fact that a very small quantity of oil...
第 8 頁 - A swift current often occurs in the narrow passage connecting two large bodies of water, owing to their considerable difference of level at the same instant. The several passages between Vineyard Sound and Buzzards Bay are cases in point.
第 5 頁 - ... of magnetic force of an amount absolutely unknown to affect a compass half a mile distant. Such deflections of the compass are due to magnetic minerals in the bed of the sea under the ship, and when the water is shallow, and the force strong, the compass may be temporarily deflected when passing over such a spot, but the area of disturbance will be small, unless there are many centers near together.
第 91 頁 - in white letters thereon, and shall exhibit, "By day: Three balls on a yard 20 feet above the sea, two placed vertically at one end and one at the other, the single ball being on the side nearest to the wreck. "By night: Three white fixed lights similarly arranged, but not the ordinary riding light.
第 8 頁 - The apparatus, moreover, for sounding the signal often requires some time before it is in readiness to act. A fog often creeps imperceptibly...
第 14 頁 - ... used. 5. A small quantity of oil suffices, if applied in such a manner as to spread to windward. 6. It is useful in a ship or boat either when running, or lying-to, or in wearing. 7.
第 6 頁 - Lists, and in some cases by noting how much its visibility in clear weather falls short of the range due to the height at which it is placed. Thus, a light standing 200 feet above the sea, and only recorded as visible at 10 miles in clear weather, is manifestly of little brilliancy, as its height would permit it to be seen over 20 miles, if of any power. (See table in Light List above mentioned.) 8.

書目資訊