7442 HYDROGRAPHIC MANUAL PaGE 690 



Where identical stations are used in the overlapping area of two hydrographic 

 surveys, the station names niust be identical. If, inadvertently, a different name is 

 used than appears on the prior survey, both names shall be placed on the smooth sheet, 

 the one actually used in the Sounding Records being followed by the older name in 

 parentheses with an appropriate explanatory note. 



7442. Size of Lettering 



Unless the draftsman is particularly skilled in lettering, it is preferable that a 

 mechanical lettering set (see 4834) be used in inking station names on the smooth 

 sheet. The 3 mm maximum height of upper case letters may be obtained by the use 

 of Leroy lettering set template No. 120 with No. 00 pen. Although letters 3 mm in 

 height are to be considered the standard, in congested areas this size is sometimes 

 impracticable and a smaller size must be used. 



The most important station names shall be in capital letters; included in this 

 designation are all triangulation station names and the station names of the most 

 prominent signals (i. e., those most frequently used). Station names of all minor 

 signals on a hydrographic sheet (i. e., those used only for sextant fixes in the immediate 

 vicinity) shall be in capitals and lower-case letters. 



7443. Placement of Station Names 



North shall be considered the top of the smooth sheet and all station names shall 

 be lettered on lines normal to the central meridian. Wherever practicable, names 

 shall be on line with the bottom of the station symbol, and east of and separated from it 

 by a space of one letter (see fig. 169). There should never be any doubt as to the 

 name of a station. Where it is necessary to place the name so far away that doubt 

 may arise as to its reference, a fine inked arrow or leader, in the same color as the name, 

 should be drawn from the name to the symbol. The leader should be broken where it 

 crosses soundings. 



Names should never be placed in the water area where it is practicable to avoid it. 

 Where this camiot be avoided, as in some cases of hydrographic stations (particularly 

 survey buoys) or stations on detached rocks, the names must be placed where they will 

 interfere least with the plotted hydrogi'aphy. The inking of such names must be 

 deferred until after the soundings have been penciled. 



The name of a triangulation station must always be followed on the same line (not 

 below) by the year of establishment and the year of recovery, a comma separating 

 the name and the date, and a hyphen separating successive dates. 



7444. Stations in Water Areas 



Unless it is clear from the topographic information, names of stations offshore from 

 the high-water line must be accompanied by a brief note, or legend, explaining whether 

 the stations are located on permanent features (natural or artificial) , or on temporary 

 ones. If the station is on a rock or shoal, the desired information is usually apparent. 

 If it is on a pile or other structure buUt in the water, or is on a pole placed in the water 

 by the hydrographic party, the note must explain fully the cuTumstances, so that the 

 cartographer will know whether to chart an obstruction, pile, or other feature at the 

 location. Such notes should be in black ink, as closely adjacent to the station name as 

 practicable, but indubitably referring to it, (See 781.) 



