252 



HYDROGRAPHIC MANUAL 



in shape and size from a water tank, the, 

 compound name will be used. 



house or building. Although it is desir- 

 able to locate a house or building by obser- 

 vations on a specific point, as the west gable 

 or the flagstaff, such terms are not desirable 

 for charting purposes, where it is the struc- 

 ture itself which is the landmark. Use 

 HOUSE or BUILDING followed by a de- 

 scription of the point in either capitals or 

 lower-case letters, according to whether it 

 should be used on the chart or not. Where 

 the outline of the building should be shown 

 on the chart, the following notation — "chart 

 outline" — should be made on Form 567. 



lookout tower. Any tower surmounted 

 by a small house in which a watch is habit- 

 ually kept, such as a Coast Guard lookout 

 tower or a fire lookout tower. Do not use this 

 term in describing an observation tower, or 

 a part of a building in which no watch is 

 kept. 



monument. Do not use Obelisk or other 

 terms. 



radar tower. A tower or structure used 

 to elevate parobolic or mattress type radar 

 reflectors. 



radio mast. A general term to include 

 any tower, pole or structure for elevating 

 antennas. 



spire. In general, any slender pointed 

 structure surmounting a building. Do not 

 use Steeple. Spire is not applicable to a short 

 pyramid-shaped structure rising from a 

 tower or belfry. 



stack. Any tall smokestack or chimney, 

 regardless of color, shape, or material, if the 

 stack is more prominent, as a landmark, than 

 any buildings in connection with it. Do not 

 use Chimney. 



standpipe. A tall cylindrical structure, in 

 a waterworks system, whose height is sev- 

 eral times greater than its diameter. 



tank. A tank for holding water, when 

 its base rests on the ground or other foun- 

 dation, and its height is not much greater 

 than its diameter. 



tank (elevated). A tank for holding wa- 

 ter, where such tank is elevated high above 



the ground or other foundation by a tall 

 skeleton framework. 



television tower. A tall slender structure 

 for elevating antennas. 



tower, (a) A part of a structure higher 

 than the rest, but having vertical sides for 

 the greater part of its height. 



(b) An isolated structure with vertical 

 sides (not otherwise classified), high in pro- 

 portion to the size of its base, and of simple 

 form. 



(c) The top of a skyscraper, high in pro- 

 portion to its horizontal size and rising 

 above its surroundings. 



(d) Any structure, whether its sides are 

 vertical or not, with base on the ground and 

 high in proportion to its base. 



tree. Do not use Lone tree or Conspicu- 

 ous lone tree. This is assumed, otherwise the 

 tree would not serve as a landmark. 



water tower (infrequent). A decorative 

 structure enclosing a tank or standpipe, or 

 used as such, when by its appearance it would 

 not be recognized as such. 



windmill. A self-explanatory term. 



Examples 



CHIMNEY, schoolhouse (Mt. Vernon 

 H.S.) 



CUPOLA, schoolhouse (Normal School, 98 

 ft. high) 



FLAGPOLE (Green Hill Country Club) 



LOOKOUT TOWER, fire, steel (110 ft. 

 high) 



SPIRE, church (A Nanticoke Church 

 Spire) 



STACK (Aiea Mill) 



STACK, black, metal (at Hot House) 



STACK (TALLEST OF FOUR), black 



STACK, white, concrete 



TANK (BAY STATE STATE CO) (o 

 Bay) 



TANK (SOUTH) (southerly of three yel- 

 low tanks) 

 *TANK, steel (125 ft. high) 



TANK, yellow (A Hot) 

 *TOWER (CITY HALL) 



7-22 Report on fixed aids to navigation. 



— Form 567, Landmarks for Charts, is also 



