Harper's boating book for boys; a guide to motor boating, sailing, canoeing and rowing . SIGN-BOARDS AND LAMP-POSTS OF THE WATER 20 BOATING BOOK FOR BOYS Lightships and Beacons In very dangerous localities, such as Nantucket Shoals,lightships are anchored to show the deep-water channelsacross a shallow stretch of water. On headlands andislands lighthouses serve to show a sailor what land it isby a system of flashes at different intervals, by a steadywhite light, or by alternate red and white flashes. In somelocalities the light is made to show white over the deepwater, and a red sector throws
Harper's boating book for boys; a guide to motor boating, sailing, canoeing and rowing . SIGN-BOARDS AND LAMP-POSTS OF THE WATER 20 BOATING BOOK FOR BOYS Lightships and Beacons In very dangerous localities, such as Nantucket Shoals,lightships are anchored to show the deep-water channelsacross a shallow stretch of water. On headlands andislands lighthouses serve to show a sailor what land it isby a system of flashes at different intervals, by a steadywhite light, or by alternate red and white flashes. In somelocalities the light is made to show white over the deepwater, and a red sector throws a red light over the shallowpart. As long as the sailor can see a white light he knowshe is out of danger. When he sees the light red he knowsthat he must avoid danger by keeping over farther untilthe light shows white again. In some places where buoys cannot be used a big, roundball is set on an iron pole (a perch and ball in sailorslanguage), and this is painted red or black according tothe side on which it is to be passed. Sometimes a cone,or a square box made of slats of iron and
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Keywords: ., bookcentury1900, bookdecade1910, bookidharpersboati, bookyear1912
