Radioheacons and radio direction-finders are mentioned in the List of Lights, but for detailed information, including the ... to avoid the possibility of collision, and sole reliance should never be placed on sighting the lightship or hearing her fog signal. ... To render symbols distinct it is necessary to greatly exaggerate their size, as compared with the scale of the chart; ... axis) denotes aquot;horizontal bandsaquot;; lines connecting the centers of opposite sides of the symbol denote aquot;checkeredaquot; buoy.
|Title||:||Great Lakes Pilot|
|Author||:||U.S. Lake Survey, United States. Hydrographic Office|