The National Geographic Magazine, Volume 70National Geographic Society, 1936 - Geography Indexes kept up to date with supplements. |
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Page 170
... radio bearings is a large factor in eco- nomical navigation . The dramatic use of SOS calls in dan- gers and tragedies of the sea is familiar enough . * Radio- grams to and from friends on shipboard are commonplace . Radio also serves ...
... radio bearings is a large factor in eco- nomical navigation . The dramatic use of SOS calls in dan- gers and tragedies of the sea is familiar enough . * Radio- grams to and from friends on shipboard are commonplace . Radio also serves ...
Page 171
... radio direction - finders . So that the directional apparatus may pick up the faint signals , the wireless operator of the sinking vessel must stick to his post , flashing out SOS or other messages as long as he can . Photograph by ...
... radio direction - finders . So that the directional apparatus may pick up the faint signals , the wireless operator of the sinking vessel must stick to his post , flashing out SOS or other messages as long as he can . Photograph by ...
Page 176
... radio in the Lighthouse Service began in 1901 , when an experimen- tal radio set was installed on the Nantucket Shoals Lightship . About four years later , during a severe gale , the lightship sprang a leak and her operator kept ...
... radio in the Lighthouse Service began in 1901 , when an experimen- tal radio set was installed on the Nantucket Shoals Lightship . About four years later , during a severe gale , the lightship sprang a leak and her operator kept ...
Contents
Beds | 83 |
70 | 125 |
New Safeguards for Ships in Fog and Storm By GEORGE R PUTNAM | 169 |
Copyright | |
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