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" ... hearing a fog signal. The apparatus, moreover, for sounding the signal often requires some time before it is in readiness to act. A fog often creeps imperceptibly toward the land, and... "
Special Publications - Seite 11
1900
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The South America Pilot: From Cape St. Roque to Cape Virgins ..., Teil 1

1893 - 668 Seiten
...mentioned.) 8. Fug Signals.—Sound is conveyed in a very capricious way through the atmosphere. Apart from wind, large areas of silence have been found in different...readiness to act. A fog often creeps imperceptibly towards the land, and is not observed by the people at a lighthouse until it is upon them; whereas...
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The Australia Directory: Chiefly from the Result of Various Surveys ..., Band 1

Great Britain. Hydrographic Department - 1897 - 938 Seiten
...clear weather. Therefore toomuch confidence should not be felt in hearing a fog signal. Theapparatus, moreover, for sounding the signal often requires some...readiness to act. A fog often creeps imperceptibly towards the land, and is not observed by the people at a lighthouse until it is upon them ; whereas...
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The Red Sea and Gulf of Aden Pilot: Containing Descriptions of the Suez ...

1900 - 580 Seiten
...mentioned.) 8. Fog Signals. — Sound is conveyed in a very capricious way through the atmosphere. Apart from wind, large areas of silence have been found in different...readiness to act. A fog often creeps imperceptibly towards the land, and is not observed by the people at a lighthouse until it is upon them ; whereas...
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From the Mull of Galloway to Rudh' Rè

1911 - 684 Seiten
...different distances from the fog signal station, in some instances even "when in close proximity to it. The apparatus, moreover, for sounding the signal often...readiness to act. A fog often creeps imperceptibly towards) the land, and is not observed by the people at a station Until it is upon them ; whereas a...
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United States Coast Pilot: Atlantic Coast. Part III. From Cape Ann ..., Teil 3

U.S. Coast and Geodetic Survey - 1912 - 178 Seiten
...not be felt as to hearing a fog signal. The apparatus, moreover, for sounding the signal may require some time before it is in readiness to act. A fog...imperceptibly toward the land, and is not observed by those at a lighthouse until it is upon them; whereas a vessel may have been in it for many hours while...
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Scandinavia Pilot: The Naze to Christiania, thence to the Kattegat; also the ...

United States. Hydrographic Office - 1915 - 590 Seiten
...the origin of sound, even in clear weather; therefore, too much confidence should not be felt as to hearing a fog signal. The apparatus, moreover, for...fog often creeps imperceptibly toward the land, and may not be observed by the lighthouse keepers until upon them; a ship may have been for many hours...
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Bay of Biscay Pilot, West Coast of France and the North Coast of Spain from ...

United States. Hydrographic Office - 1915 - 1286 Seiten
...the origin of sound, even in clear weather; therefore, too much confidence should not be felt as to hearing a fog signal. The apparatus, moreover, for...fog often creeps imperceptibly toward the land, and may not be observed by the lighthouse keepers until upon them; a ship may have been for many hours...
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North Sea Pilot (eastern Shores): From Dunkerque to the Skaw

United States. Hydrographic Office - 1915 - 418 Seiten
...the origin of sound, even in clear weather; therefore, too much confidence should not be felt as to hearing a fog signal. The apparatus, moreover, for...fog often creeps imperceptibly toward the land, and may not be observed by the lighthouse keepers until upon them; a ship may have been for many hours...
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North Coast of France Pilot, Including the Channel Islands

United States. Hydrographic Office - 1915 - 658 Seiten
...the origin of sound, even in clear weather; therefore, too much confidence should not be felt as to hearing a fog signal. The apparatus, moreover, for...sounding the signal often requires some time before it is in-readiness to act. A fog often creeps imperceptibly toward the land, and may not be observed by the...
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British Columbia Pilot: The coast of British Columbia from the strait of ...

United States. Hydrographic Office - 1916 - 592 Seiten
...of silence have been found in different directions and at different distances from the origin of the sound, even in clear weather. Therefore too much confidence...the people at a lighthouse until it is upon them, whereas a ship may have been for many hours in it and approaching the land. In such a case no signal...
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