HYDROGRAPHIG MANUAL 

 Special Publication No. 143 



IMPORTANT ERRATA 



(Only errata in numbers smd errata which might mislead the reader 

 are included. Obvious typographical errors are omitted.) 



Page Ref. Par. Line 



XIII Fig. 171. Change page no. 748 to 2^. 



14 7 3 Change 1:180,000 or 1:20,000 to 1:80.000 or 1:120.000 . 



73 Fig. 6 Change 2nd and 3rd entries in "Remarks" column to 51° 32' 441*4 



and 163° 06* 44'.'6 . respectively. 



98 Last line on page. Insert canma(,) after "plotting". 



520 5551 2 1 Last word in line is that . 



2 Last word in line is per . 



530 1 First word on page is layer . 



539 562 5 Delete comma (,) after "between". 



645 Equation(l), complete parentheses around the quantity (A - (9). 



664 724 1 Last word in line. For know- read knows . 



763 Table 29. In second column, change 10 to 11 fathoms 



in four entries. 



780 8322 3 2 For "a" read "the" before "Sounding Records". 



ERRATA IN INDEX 



Beaun compass, Use. 2nd page no. is 423 . 



Boat sheet(8). Offshore . Page no. is 207 . 



Boat sheet use at Washington Office. 1st page no. is 20^ . 

 Under "Buoy(s), Survey", for Siganl read Signal . 

 Clock(s), hydrographic. Use. Correct ref. no. is 4542 . 

 Collodon and StuxTii. For Strum read Sturm . 

 Under "Control", change 2nd ref. no. from 2213 to 2231. 



18th entry, "Classification of ". Correct ref. no. is 



3rd entry. Change "on" to "of" in Abstract of control data . 



Change 9th entry from bottom to Penciling .... 7762 731 . 



In 13th entry, change key to keying . 



Under "motor, synchronous. Testing, etc.", correct ref. is 5267(.1) .(k) . 



Fishers Island Sound. For round read sound . 



2nd entry from bottom. Change page no. from 51 to ^. 



Last entry. Correct ref. and page nos. are 166 and 51 . 



Geographic name(s), iiigratory features. Change on to of. 



Graphs, temperature. Change "graphs" in parentheses to curves . 



High-water line. Change data in parentheses to details. 



Hydrographic stations located with reference to . Delete remainder. 



Ist indented entry under above is detail on photographs . 



Under "Hydrophone (s), Sono-radio buoy, Dorsey", interchange the page 



nos. opposite "cables" and "compared with". 

 Leadline(s) marked in fathoms or feet. For of read or. 

 Leadline(s), Marking for use in checking. Change Marking to Marks . 

 Log(s), ship, calibration. Change page no. from 35 to 351 . 

 Lyle gun. Change ref. no. from 263a to 2613a . 

 Under "Magnetic anomaly", indent "evidenced by, etc." 2 ens. 



Under "Map(s)", aline "Local " vertically above "measure". 



15th entry under "Nautical chart(s)". Aline "Preparation" vertically 



above "Reporting". 

 Oscilloscope. Correct ref. no. is 5267(l). Letter "ell" in parentheses. 

 Last entry. Change page no. from 344 to 345 . 

 Pelorus, Description. Change page no. from 345 to 344 . 

 Plotter, smooth-sheet. In last indented entry, change ref. no. from 



7632 to 7624 . 

 Receiving units, acoustic. In cross-reference add "Acoustic unit" after 



"also" and delete the words "and receiving". 

 13th entry from bottom. Change page no. from 7901 to 790 . 



(over) 



