36 



HYDROGRAPHIC MANUAL 



SYMBOLS FOR PROGRESS SKETCHES 

 Combined Operations 



Magnetic station G Oceanograph.c stadon © 



Current statton © Serial temperatures © 



Tide gage T G Velocimeter station © 



Hydrography 



Area surveyed 



MAY j^ 



,•:•:;-• MAY :;; 



Shoreline inspection MMl///ffj^/ //f/////// //^^ ff///////M ^ 

 Wire Drag areas •imofTmrfTm/irm/yTTTjf/TrTf'TTr. 



TrianguUttion and Traverse 



Recovered stations 



|} New stations /•\ 



Identified on photos \}y P t\ P 



Mam scheme 



Intersection directions . 



Observed one direction /'\ ~ 



A 



Oceanographic Projecti 



Se€ text for use of letters to supply additional information 



Or.ft bottles -y- Tide gage GtG Bottom sample /\ 



Bottom photograph U Nansen bottle cast Q 



Bathythermograph D Current station © 



Oceanographic station to) Biological sample c£jj 



Figure 3. — Symbols to be used when drawing 

 progress sketches. 



necessary to report other accomplishments, 

 but such symbols must be explained in a 

 legend. Oceanographic observations made as 

 part of the combined operations project shall 

 be shown on the same sketch. 



Vessels assigned to oceanographic projects 

 shall use the symbols shown in the lower 

 part of Figure 3 to report progress. The 

 symbol for Nansen bottle casts shall be sup- 

 plemented by letters and numbers to iden- 

 tify the water samples retained. A sample 

 obtained for determination of salinity shall 

 be identified by the letter S; for oxygen by 

 the letter 0; for phosphate by the letter 



P; and for nitrates by the letter N. The 

 numbers on the sample bottles shall be shown 

 also — as S 105-121 to show that salinity 

 samples numbers 105 to 121 inclusive were 

 obtained at that station. 



Each bottom sample retained for analysis 

 shall be numbered consecutively and the 

 method used to obtain the sample shall be 

 indicated on the sketch as follows : 

 C= core; S= snapper cup; SF= scoopfish; 

 and D= dredge. A dash line should be used 

 to show the route of dredging. 



The number of the station shall be shown 

 beside each current station symbol and the 

 method used to measure the currents shall 

 be indicated by letters as follows: R=: radio 

 current meter; Pi= pole; PM= Price meter; 

 and D= drogue. 



Biological samples shall be numbered con- 

 secutively and the type of sample shown by 

 letters as follows: F— plankton net; T= 

 mid-water trawl ; and D= dredge. 



The identifying numbers assigned to drift 

 bottles shall be shown beside the symbol for 

 each drop. 



Most symbols on the Oceanographic 

 progress sketch can be drawn with a Leroy 

 lettering guide No. 3240A obtainable from 

 the Washington Office. 



A new monthly progress sketch shall be 

 started at the beginning of each season, and 

 continued throughout the season, irrespective 

 of fiscal years. On continuing projects a new 

 sketch shall be started in January of each 

 year. Progress sketches will be returned to 

 the Chief of Party, without request, after 

 the information on them has been trans- 

 ferred to the office progress charts. 



2-45 Season's report. — A season's report 

 shall be submitted by every Chief of Party 

 prior to the beginning of the next field sea- 

 son or before a change of command. When 

 field work on one project is continuous 

 through December 31, the report shall be 

 made as of that date if there is no imme- 

 diate prospect of completing the project. 

 The report shall be in detail, covering each 

 project completed or in progress. A mere 

 chronological summary of events and table 

 of statistics are of little value in such a 



