250 



HYDROGRAPHIC MANUAL 



metry data may be avoided. The report shall, 

 state whether or not an inspection has been 

 made to determine the value of the landmarks 

 when viewed from the water area. 



Flagstaffs and flagpoles because of their 

 temporary nature should be listed as land- 

 marks only where there are no other suit- 

 able objects in the vicinity or if they are 

 of a very permanent nature. 



7-19 Preparation of reports on landmarks. 



— When only a few objects are reported, 

 Form 567 may be used. Where a number 

 of landmarks are reported Form 567 shall 

 be accompanied by sections of charts. The 

 forms shall be prepared as follows : 



(a) Objects of special importance or prom- 

 inence shall be indicated by an asterisk (*) 

 preceding the name of the object. In the 

 selection of these the total area involved 

 should be considered. 



(b) In the first column headed "Charting 

 Name" shall be shown in capital letters the 

 name recommended for charting. It should 

 be a short and general name as shown in 

 7-21. A short description shall be entered 

 in the next column. If the object was used 

 as a signal to control hydrography, the name 

 used for this purpose shall be entered in the 

 third column. 



(c) In the columns headed "Position" the 

 position, where accurately known, shall be 

 given in degrees, minutes and the dms. and 

 dps. in meters, and where so given the data 

 will be considered accurate enough for chart- 

 ing purposes. The datum, method of loca- 

 tion, and chart numbers of the charts af- 

 fected shall be given. The data entered on 

 the form must be verified and the form signed 

 by the verifier. 



(d) Th6 form shall be forwarded in dupli- 

 cate. The duplicate copy shall be marked 

 "Coast Pilot Section" and notations made on 

 it as to the relative prominence of each land- 

 mark and how the landmarks affect the Coast 

 Pilot. 



7-20 Preparation of chart-sections. — 



Where a number of landmarks are reported, 

 a recently printed copy of the chart of the 

 area, cut into letter size sections, shall be 



prepared in addition to Form 567. Only one 

 copy of chart-sections need be submitted. 

 The area which has been inspected shall be 

 outlined on these chart sections and a recom- 

 mendation shall be made for each charted or 

 plotted landmark within the area outlined. 

 The following procedure shall be used : 



(a) New landmarks shall be plotted and 

 identified by the landmark symbol (o) ac- 

 companied by the name recommended for 

 charting. The geographic datum of the chart 

 must be known and considered in the plotting. 



(b) Charted landmarks, the continuance 

 of which is recommended, shall be check- 

 marked (V). and where the position has 

 actually been verified during field work, the 

 checkmark shall be accompanied by the word 

 "verified." 



(c) Charted landmarks, the deletion of 

 which is recommended, shall be indicated 

 by an X in a circle, accompanied by the word 

 "delete" ( X delete) and the reason for the 

 recommendation shall be given. 



If chart sections are submitted, landmarks 

 to be deleted need not be listed on Form 

 567. 



Where new uncharted landmarks are 

 shown on the chart submitted, a notation 

 shall be made thereon in a prominent place 

 giving the latitude and longitude, with sec- 

 onds in meters, of some one charted land- 

 mark. The datum used shall be shown on 

 the chart. 



Names and notations on these chart sec- 

 tions shall be typed or lettered legibly in red 

 ink. Care must be taken that such notations 

 always appear on the same section as the 

 landmarks to which they refer. 



7-21 Standardization of nomenclature. — 



It is essential for charting purposes that the 

 nomenclature used, and the method of re- 

 porting it, be standardized. The cartog- 

 graphers should not have to interpret these 

 data because they cannot see the object in 

 the field and cannot know what is most 

 prominent about the landmark. If a landmark 

 is reported on Form 567 as a "Tall yellow 

 tank," the cartographer cannot tell whether 

 the landmark is prominent because it is a 

 tank, because it is yellow, or because it is 



