6. THE SMOOTH SHEET 



239 



to the date of the present survey should be 

 discussed. Controlling depth notes dated sub- 

 sequent to the present survey supersede the 

 present survey information and should be 

 so identified. 



(c) Aids to navigation. — The adequacy of 

 the charted positions of aids to navigation 

 in marking the features or serving the pur- 

 pose intended should be stated. Where shoals 

 and channels have shifted in position and 

 are not adequately marked by the charted 

 buoys, or a new unmarked danger is noted, 

 a definite recommendation should be made. 

 Except for a fixed aid moved in its official 

 position subsequent to the present survey, 

 differences between the charted and present 

 survey position of fixed aids to navigation 

 should be noted. 



8. Compliance with instructions. — A brief 

 statement shall be made that the survey ade- 

 quately complies with the projection instruc- 

 tions, unless there is a significant exception 

 to be noted. 



9. Additional field work. — The survey shall 

 be evaluated as an adequate, good, or excel- 

 lent basic survey and a statement shall be 

 made that additional field work is or is not 

 recommended. If additional field work is 

 recommended, each item or area shall be 

 clearly described unless reference can be 

 made to specific discussions in the report. 

 Where further work is desirable, it will 

 usually consist of examination of shoal indi- 

 cations or questionable charted information, 

 disposal of discrepancies, and further de- 

 velopment of outstanding oceanographic fea- 

 tures or inadequately developed areas on the 

 survey. 



6-106 Final inspection.— The Chief, Hy- 

 drographic Section, shall make a final criti- 

 cal inspection of the survey for the purpose 

 of gaining an overall picture of the survey 

 with regard to coverage, delineation of depth 

 curves, critical depths, cartographic symboli- 

 zation, and verification or disproval of 

 charted information. The review report is 

 examined to see that all pertinent facts have 

 been adequately and clearly presented, and 

 that significant actions taken during the re- 

 view and the recommendations included in 



the report are correct and adequate. The re- 

 view report is typed and inserted as an ad- 

 dendum to the descriptive report. 



6-107 Administrative approval. — The 



smooth sheet and descriptive report shall be 

 submitted for approval by the administra- 

 tive officers who direct the field survey op- 

 erations and charting of the surveys. Their 

 approval shall be indicated by signatures on 

 the last page of the review report. 



Copies of the approved review report shall 

 be forwarded to the Coastal Surveys Divi- 

 sion, the chief of party and hydrographer 

 responsibile for the survey, and the smooth 

 plotter. 



6-108 Preparation of presurvey review. — 



The Hydrographic Section shall prepare a 

 presurvey review of charted data in advance 

 of field surveys. Although the hydrographer 

 will have copies of the latest large-scale 

 charts and will be furnished copies of per- 

 tinent prior surveys, an office review of all 

 survey records and chart information re- 

 ceived from other sources is an invaluable 

 aid to all phases of hydrographic survey 

 operations. The reviewer shall furnish any 

 information which will benefit surveying and 

 charting. He shall consider reviews of the 

 latest surveys but usually need not refer to 

 surveys which have been superseded. 



The reviewer shall compare prior surveys 

 with the largest scale chart or charts of the 

 project area. Any questionable hydrographic 

 data and important undeveloped depths shall 

 be encircled on the chart after examining 

 the records and verifying the plotting of the 

 original information on the survey if not 

 previously verified. Charted data which ob- 

 viously must be transferred to the boat sheet 

 (see 5-15) and verified in a revision survey 

 shall not be considered. These include 

 charted wire drag clearances and least 

 depths on shoals and submerged rocks when 

 these data are verified on prior surveys. But 

 reported shoals, rocks, wrecks and piling 

 shown on the chart shall be encircled. Per- 

 tinent data on source material indexed sub- 

 sequent to the print date of the chart shall 

 be considered. 



