United States Coast Pilot: Atlantic Coast. St. Croix River to Cape Cod, Volume 1

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U.S. Government Printing Office, 1918 - Pilot guides
 

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Page 27 - ... apart. The highest and lowest of these lights shall be red and the middle light shall be white, and they shall be of such a character as to be visible all around the horizon at a distance of at least 2 miles.
Page 16 - Refined kerosene is of little use ; crude petroleum is serviceable when nothing else is obtainable ; but all animal and vegetable oils, such •as waste oil from the engines, have great effect. 4.
Page 16 - On free waves, ie, waves in deep water, the effect is greatest. "2. In a surf, or waves breaking on a bar. where a mass of liquid is in actual motion in shallow water, the effect of the oil is uncertain, as nothing can prevent the larger waves from breaking under such circumstances, but even here it is of some service.
Page 15 - ... 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.
Page 30 - The pennants displayed with the flags indicate the direction of the wind: red, easterly (from northeast to south); white, westerly (from southwest to north). The pennant above the flag indicates that the wind is expected to blow from the northerly quadrants; below, from the southerly quadrants.
Page 254 - NY, below the head of tidewater, shall, upon the signal prescribed in paragraph 9 below being given, be opened promptly at all hours for the passage of any vessel or vessels or other water craft not able to pass underneath it, except that the bridge of the Delaware & Hudson Co.
Page 7 - COAST AND GEODETIC SURVEY. The Coast and Geodetic Survey is charged with the survey of the coasts of the United States and coasts under the jurisdiction thereof and the publication of charts covering said coasts.
Page 11 - Thus a light standing 200 feet above the sea and recorded as visible only 10 miles in clear weather is manifestly of little brilliancy, as its height would permit it to be seen over 20 miles if of sufficient power. Fog signals.—Sound is conveyed in a very capricious way through the atmosphere.
Page 10 - The glare of a powerful light is often seen far beyond the limit of visibility of the actual rays of the light, but this must not be confounded with the true range.
Page 16 - 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...

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