We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
Making Life Safe at Sea
467
acter are called radio compass stations and are located along our coast line and at the entrance to many of our larger harbors. Within the past few years they have rendered a remarkable service.^
Professor J. H. Morecroft of Columbia University in an editorial in the August Radio Broadcast, has made the very practical suggestion that radio compasses operating on short wavelengths could be manned by any member of a ship's crew with very little instruction. By a
signals and report them to the navigating officer.
An arrangement of this character would in no wise interfere with existing services. It could be made a very simply operated device, and infinitely more worth while than the present practice of employing a bow watchman even though the latter is supplied with a powerful glass.
There is another type of station used for marine work, based on the same principle but
DIAMOND SHOALS LIGHTSHIP
This modern light vessel is located off Cape Hatteras and is equipped with submarine signaling equipment radio beacon, and other modern appliances for the guidance of navigators
timing arrangement, it would be possible to have signals automatically transmitted by a special, low-power, short-wave outfit, and during the periods of silence a receiving compass coil, tuned to the wavelength employed could be automatically rotated. The observer would merely have to note the direction of incoming
'Much valuable work in this application of radio may justly be credited to Frederick A. Kolster, formerly Physicist of the Bureau of Standards and now with the Federal Telegraph Company, as well as to Francis W. Dunmore, Associate Physicist of the Bureau of Standards. "The Direction Finder and its Application to Navigation" which was prepared jointly by these two men, is a comprehensive booklet thoroughly describing and illustrating the principles involved. It is listed under "Scientific Papers of the Bureau of Standards" as No. 428.
using a method which is exactly the reverse of the one we have just considered. This type is know as the radio beacon. In the same manner as a lighthouse employing a flashing light may be distinguished by the length of the flash or the number of flashes, the radio beacon may be recognized by the signals it is made to transmit. In heavy weather these stations send signals at regular intervals, in all directions, which may be picked up by any ship within their range.
In this instance it is necessary for the ship desiring to know her direction from a beacon station to be equipped with a radio compass of the type we have just considered for shore