NOS Survey H08751 - HYD93 Format Header

  Surv Id Format Ngdc Id   Params Create Date Source Institution Seq
4 H08751 HYD93 03F11449   SF 19791231 National Ocean Survey, N.O.A.A. 01
Country Platform Name Plat Type Chief Hydrographer(s) Seq
U.S.A. Field/Shore Party 1SHIP P.A. STARK 02
Project Type of Survey Strt Yr End Yr Scale of Survey Seq
    1962 1963 20,000 03
Area (General) of Survey Area (Specific) of Survey Seq
TEXAS OUTER COAST VICINITY OF GALVESTON BAY ENTRANCE 04
Quality of Survey Description Processing Status Description Seq
    05
Position Determination Seq
  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
02 Mean Low Water   feet 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
Smooth sheets digitized for N.O.S. under Ashville Contract 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) +29.45 +29.31 -94.74 -94.60 12
Additional Documentation
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Note: You can find the comnplete HYD93 Format Specification, including all code descriptions, at www.ngdc.noaa.gov/mgg/dat/geodas/docs/hyd93.htm