NOS Survey H09865 - HYD93 Format Header

  Surv Id Format Ngdc Id   Params Create Date Source Institution Seq
4 H09865 HYD93 03141047   SF 19810402 National Ocean Survey, N.O.A.A. 01
Country Platform Name Plat Type Chief Hydrographer(s) Seq
U.S.A. Peirce 1SHIP C.D. NORTH 02
Project Type of Survey Strt Yr End Yr Scale of Survey Seq
OPR-G144 Basic Hydrographic survey 1980 1980 20000 03
Area (General) of Survey Area (Specific) of Survey Seq
ATLANTIC COAST TYBEE ROADS TO OSSABAW SOUND 04
Quality of Survey Description Processing Status Description Seq
    05
Position Determination Seq
Range-azimuth,elec. range+theod. cut; Electronic,range-range 06
Code Horizontal Datum of Records Code Original Horizontal Datum Seq
NOS31 North American Datum 1983 NOS06 North American Datum 1927 07
code Vertical Datum tide Original Sounding Units Seq
04 Mean Lower Low Water 6.50   08
Sounding Method Seq
Digital Echo Sounder w/ Graphical Record assumed 09
c Sound Velocity Correction Seq
1 Corrected for actual sound velocity 10
Data Processing Methodology Seq
Digital data processed at NOS Marine Center: HARRIS 11
Format of Data Records Top Lat Bottom Lat Left Lon Right Lon Seq
SURV,LAT,LON,VAL,TYP,CCODE(A8,F9.6,F10.6,F6.1,I1,I3) +32.04 +31.83 -81.00 -80.77 12
Additional Documentation
Seq
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24

Note: You can find the comnplete HYD93 Format Specification, including all code descriptions, at www.ngdc.noaa.gov/mgg/dat/geodas/docs/hyd93.htm