Google Books

... so constructed as to show a uniform and unbroken light over an arc of the horizon of 10 points of the compass, and so fixed as to throw the light from right ahead to 2 points abaft the beam on their respective sides.

The Ohio River: Charts, Drawings, and Description of Features Affecting ... - Page 33
by United States. Army. Corps of Engineers - 1935
Full view - About this book

A Compilation of the Messages and Papers of the Presidents, 1789-1922, Volume 13

United States. President - Presidents - 1917 - 562 pages

...least 5 miles. (b) On the starboard side a green light so constructed as to show an unbroken light over an arc of the horizon of 10 points of the compass, so fixed as to throw the light from right ahead to 2 points abaft the beam on the starboard side, and...

Full view - About this book