Page 849 miscellaneous 9331 



with any other specific instructions. Subsequently the soundings, bottom char- 

 acteristics, and other details in the sounded area are inked and any deficiencies are 

 supplied. 



It is imperative that there be no duplication of work by the verifiers and reviewers 

 (see 934). The verifier's duties are with the present hydrographic survey and its 

 accompanying records, and with correlating it to other contemporary surveys — the 

 hydrographic surveys with which it makes a junction and the contemporary topo- 

 graphic or air photographic survey. Wlien the verifier completes his work, the survey 

 should be a complete and accurate record of all hydrographic information currently 

 obtained in the area. The verifier must not consider the present survey in its relation 

 to prior surveys in the same locality. That is the function of the reviewer (see 9343). 

 However, any matters pertaining to the review that are noted during the verification 

 should be called to the attention of the reviewer on Form A/-996. 



While drafting of the quality found on charts is not required in inking hydrographic 

 sheets there must be no sacrifice in accuracy of any important details on the sheet, nor 

 in the legibility of the soundings (see 721). Soundings particularly should be unmis- 

 takably legible and they should be inked in accordance with 773. Notes pertaining to 

 hydrographic features should be in slanting letters and those pertaining to topographic 

 features in vertical letters (see 781). 



A verifier should be thoroughly familiar with chapters 3 and 7 of this Manual, 

 where the requirements for field work and for the preparation of the smooth sheet are 

 given in detail. In liis verification he is to be guided by the instructions in 9331 to 

 9339 inclusive. No hydrographic smooth sheet is to be considered as verified until 

 all requirements and instructions have been complied with insofar as practicable. 

 The schedule of penciled and inked details in 792 may be used as a check list, 



9331, Boat Sheet and Records 



The Descriptive Report should always be consulted before any work is done on the 

 sheet, as it frequently contains vital information. 



The boat sheet should be referred to constantly during the verification, particu- 

 larly to check the accuracy of the protracting (see 767) , The boat sheet often contains 

 supplemental details and helpful notes, some of which, after being edited, should be 

 inked on the smooth sheet (see 3212), 



The Sounding Records contain no data that are not essential to the complete and 

 accurate plotting of the survey. Every miscellaneous entry in the Record, especially 

 in the "Remarks" column should be noted and checked with colored pencil. In many 

 cases the only information available regarding rocks awash, which are often of supreme 

 importance, is found in the "Remarks" column. Always consult higher authority in 

 cases where the required action is not entirely clear. (See 815.) 



The original entries in the Sounding Records are always made in black pencil. 

 Amendments in colored pencil by the person who plotted the sheet should be considered 

 as a guide by the verifier but, as they are often made months after the date of the field 

 work, the verifier should use independent judgment as to whether the amendments are 

 justified. More weight should be given to amendments made by a member of the 

 survey party. 



The verifier should checkmark with colored pencil all positions that he verifies, 

 using a different color from that found in the Records. He should use the same color 

 for all notations that he makes in the Record. 



465382—44 55 



