| Surv Id | Format | Ngdc Id | Params | Create Date | Source Institution | Seq | ||
| 4 | B00067 | HYD93 | 03182018 | S | 1994101 | National Ocean Survey, N.O.A.A. | 01 |
| Country | Platform Name | Plat Type | Chief Hydrographer(s) | Seq |
| U.S.A. | Davidson | 1SHIP | CDR DAVID W. YEAGER, CMDG, NOAA | 02 |
| Project | Type of Survey | Strt Yr | End Yr | Scale of Survey | Seq |
| N913-DA-86 | EEZ Bathymetric Survey | 1986 | 1986 | 20,000 | 03 |
| Area (General) of Survey | Area (Specific) of Survey | Seq |
| PACIFIC OCEAN | Heceta Bank | 04 |
| Quality of Survey Description | Processing Status Description | Seq |
| 05 |
| Position Determination | Seq |
| RAYDIST | 06 |
| Code | Horizontal Datum of Records | Code | Original Horizontal Datum | Seq |
| NOS31 | North American Datum 1983 | NOS31 | North American Datum 1983 | 07 |
| code | Vertical Datum | tide | Original Sounding Units | Seq |
| 04 | Mean Lower Low Water | meters | 08 |
| Sounding Method | Seq |
| BSSS GENERAL INSTRUMENTS 1 15 Beams 36 KHZ | 09 |
| c | Sound Velocity Correction | Seq |
| 1 | Corrected, Vertical-cast Sound Velocity Table 86218-0000.VEL;1 | 10 |
| Data Processing Methodology | Seq |
| NOS Pacific Hydro Section - standard SEABEAM processing | 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) | +44.22 | +43.94 | -124.86 | -124.78 | 12 |
Additional Documentation |
Seq |
| This data is a subset of SEABEAM file. 5 Beams of actual data were extracted | 13 |
| from each return. Sampling rate varies from 10 to 30 seconds along track. | 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