7. REPORTS AND MISCELLANEOUS 



253 



used to report the positions of fixed aids to 

 navigation in the project area (see 5-80). 

 The positions of all fixed aids must be de- 

 termined or verified, including all privately 

 maintained lights and beacons. Applicable 

 parts of the instructions contained in 7-18 

 and 19 should be followed in compiling this 

 report. It is important that the names of 

 the aids entered on the form be identical 

 with those in the Light List, and the Light 

 List number should be given. The position 

 of each aid should be plotted on the largest 

 scale chart of the area and compared with 

 the charted position. Significant differences 

 should be reported to the Coast Guard Dis- 

 trict Headquarters and the Washington Office. 

 The report shall be made on an area or 

 seasonal basis. A separate report for each 

 hydrographic sheet is not desired. The aids 

 to navigation shall be listed separately from 

 the landmarks, since these reports serve a 

 different purpose in the office. 



7-23 Reports on dangers to navigation. 



— All shoals, obstructions, wrecks, or other 

 submerged features discovered that are con- 

 sidered dangers to navigation shall be re- 

 ported immediately by radio, telephone, or 

 telegraph to the Commander of the nearest 

 United States Coast Guard District and to 

 the Coast and Geodetic Survey District Office 

 (see 1-51). The message shall be in the 

 following form: "(object) covered by (depth 

 of water) at (datum) discovered; distant 

 nautical miles or yards, bearing de- 

 grees true from (charted object)." 



A tracing from the boat sheet or chart 

 showing the exact location of the danger 

 discovered should be forwarded to the Wash- 

 ington Office at the earliest opportunity. A 

 statement shall be included in the descriptive 

 report mentioning each danger reported to 

 the Coast Guard, (7^K), so that such infor- 

 mation will not be duplicated. 



Floating wreckage, logs, derelicts, or other 

 floating objects sighted which are menaces 

 to navigation shall be promptly reported by 

 dispatch to the Commander of the nearest 

 Coast Guard District. 



When a floating aid to navigation is found 

 to be off station to an extent that it does 



not adequately serve its purpose and may 

 create a danger to navigation, the facts 

 should be reported to the nearest Coast Guard 

 District by dispatch (see 1-50). 



The necessity for prompt action in all the 

 above situations cannot be overemphasized. 

 Dispatches should always be confirmed in 

 writing. Copies of all correspondence with 

 the Coast Guard shall be forwarded to the 

 Washington Office. 



7-24 Shipment of records. — Field rec- 

 ords should be processed in an orderly man- 

 ner as time and circumstances permit. Com- 

 pleted records should be forwarded to the 

 Washington Office promptly. When photo- 

 grammetric manuscripts must be recompiled 

 or revised prior to application to a smooth 

 sheet, all photographs and supporting data 

 should be transferred to the designated pho- 

 togrammetric office as soon as possible after 

 field work has been completed for each sheet 

 or small group of sheets. Retention of these 

 data until the end of the season will cause 

 delays in further processing. 



The Chief of Party should inspect all rec- 

 ords and reports to see that they are com- 

 plete. Any deficiency must be fully explained. 



Form 413, Letter Transmitting Data, shall 

 be used when transmitting records to any 

 office or field party. The original and one 

 copy of the form shall be forwarded to the 

 addressee in a separate envelope. One copy 

 of the form shall be enclosed with each pack- 

 age of a shipment. Each package of a sea- 

 son's work shall be numbered consecutively, 

 beginning with No. 1 and continuing until 

 all data for the season have been forwarded. 



All records shall be well wrapped or boxed 

 and forwarded by registered mail or express. 

 Smooth sheets shall be transmitted in spe- 

 cial non-breakable containers furnished for 

 that purpose. The smooth sheet, boat sheet, 

 sounding records, and fathograms shall be 

 forwarded in separate mails as security 

 against total loss of the survey records. The 

 general rule is that computations or other 

 processed data shall not be forwarded with 

 the original records. 



Records and computations destined to dif- 



