The United States Lighthouse Service 1923U.S. Government Printing Office, 1923 - 111페이지 |
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Acetylene aids to navigation Air siren Alaska apparatus assistant Atlantic bell buoys built buoys Calif Cape Cape Hatteras channels compressed concrete construction cost Daymarks deck DIST distance district-Continued duty Electric employees engine equipped feet fixed white flashing white fog signal Gas buoys Harbor Hawaii important incandescent oil vapor inclosed installed iron June 30 keepers Ketchikan Lakes lamp lantern lens light vessels lighted buoys Lighthouse Service lighthouse tenders lighthouse vessels lightship located maintained marine bell Mass ment minor lights Mississippi River mooring Nantucket nautical miles Navassa Island Navy Department occulting white operated Oreg Pacific coast Point post lights radio compass radio signal rear admiral Reef repair River Rock Sail ship single screw sound Staten Island Steam chime whistle Steam whistle Steamer steel structures submarine bell superintendents supplies tions Total tower twin screw U. S. Navy unlighted various Whistling buoys
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99 페이지 - Omit also lights or fog signals on ferry slips and on piers used only by certain vessels, and stakes, bushes, and barrel buoys marking shallow and little-used channels. (3) In placing aids to navigation in connection with harbor or channel improvement works. District Engineers should see that they do not conflict in character or otherwise with other aids to navigation in the vicinity.
36 페이지 - Weak lights and colored lights are easily obscured by such conditions. Under certain atmospheric conditions, especially with the more powerful lights, the glare of the light may be visible beyond the computed geographic range. When approaching a...
94 페이지 - President Jefferson, when passing upon the case of a lighthouse keeper found guilty of negligence in attending to his duties, stated : " I think the keepers of lighthouses should be dismissed for small degrees of remissness because of the calamities which even these produce." A retirement law is now in force for the benefit of keepers and other field employees of the Lighthouse Service who are exposed to the hazards of the service. This law provides for optional retirement on three-quarters pay after...
51 페이지 - All buoys along the coast, or in bays, harbors, sounds, or channels, shall be colored and numbered, so that passing up the coast or sound, or entering the bay, harbor, or channel, red buoys with even numbers shall be passed on the starboard hand, black buoys with uneven numbers on the port hand, and buoys with red and black stripes on either hand. Buoys in channel-ways shall be colored with alternate white and black perpendicular stripes.
6 페이지 - The President is hereby authorized, whenever in his judgment a sufficient national emergency exists, to transfer to the service and jurisdiction of the Navy Department, or of the War Department, such vessels, equipment, stations, and personnel of the Lighthouse Service as he may deem to the best interest of the country...
1 페이지 - The United States Lighthouse Service is charged with the establishment and maintenance of aids to navigation, and with all equipment and work incident thereto, on the sea and lake coasts of the United States, and on the rivers of the United States so far as specifically authorized by law, and on the coasts of all other territory under the jurisdiction of the United States, with the exception of the Philippine Islands and Panama. The...
92 페이지 - All officers and employees engaged in the field service or on vessels of the Lighthouse Service...
35 페이지 - A fixed light varied, at regular intervals, by a group of two or more flashes of relatively greater brilliancy.
51 페이지 - K- s-> 4677. .s., 4678. 369 channel, red buoys with even numbers shall be passed on the starboard hand, black buoys with uneven numbers on the port hand, and buoys with red and black stripes on either hand. Buoys in channel-ways...
31 페이지 - ... to the fact that a large proportion of the light given out by the source is concentrated by the prisms into beams useful to the mariner, and the consequent economy in the consumption of oil or other illuminant used." * The Fresnel lenses are classified into six orders, depending on the focal length of the lens ; that is, the distance from the center of the light to the inner surface of the lens, as follows : First Order 36.2 inches Second Order 27.6 Third Order 19.7 Third and a half Order 14.7...