NOS Survey L01106 - HYD93 Format Header

  Surv Id Format Ngdc Id   Params Create Date Source Institution Seq
4 L01106 HYD93 03NG1180   S 19950616 National Ocean Survey, N.O.A.A. 01
Country Platform Name Plat Type Chief Hydrographer(s) Seq
U.S.A. Unknown Ship 1SHIP Major Lansing H. Beeach 02
Project Type of Survey Strt Yr End Yr Scale of Survey Seq
    1905 1905 1:10,000 03
Area (General) of Survey Area (Specific) of Survey Seq
Green Bay Vicinity of Eagle Harbor 04
Quality of Survey Description Processing Status Description Seq
    05
Position Determination Seq
  06
Code Horizontal Datum of Records Code Original Horizontal Datum Seq
NOS04 Standard American Datum (add doc) NOS04 Standard American Datum (add doc) 07
code Vertical Datum tide Original Sounding Units Seq
  Great Lake Datum, differs lake to lake     08
Sounding Method Seq
Lead Line assumed 09
c Sound Velocity Correction Seq
5 Non-acoustic depth measurement 10
Data Processing Methodology Seq
Smooth sheets digitized for N.O.S. by National Geophysical Data Center 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) +45.19 +45.12 -87.30 -87.17 12
Additional Documentation
Seq
The Standard American Datum used by Army Corps of Eng. may be misnamed. 13
The most likely datum used was U.S Standard Datum 1901 (Clarke Ellipsoid 1866) 14
ref: NOAA Professional Paper NOS2: North American Datum of 1983 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