MERGED-MERGED Format Description 

Columns Field Description

1 - 8 Ship Cruise and Identification 9 - 13 Time Zone 14 - 15 Year 16 - 17 Month 18 - 19 Day 20 blank 21 - 22 Hour 23 - 25 Minute (decimal minutes with implied decimal; mm.t) 26 - 33 Latitude (decimal degrees; sxx.xxxx) south latitude is negative 34 - 42 Longitude (decimal degrees; sxxx.xxxx) west longitude is negative 43 Navigation Pt. Id 44 Fix description  45 - 47 Satellite Current Azimuth 48 - 51 Current Velocity (implied decimal; nn=mnn.n) 52 blank 53 - 57* Uncorrected Depth; fathoms (implied decimal; nnnnn=nnnn.n) 53 - 57** Uncorrected Depth; meters 58 - 62 Corrected Depth (meters) 63 - 64 Matthews Zone 66 - 70 Total Magnetic Intensity - gammas 71 - 75 Residual Magnetic Intensity 76 - 80 Free Air Anomaly - milligals (implied decimal; nnnnn=nnn.nn)

 

Fix description
	0 = unspecified 1 = Decca  2 = visual  3 = radar  4 = celestial (star fix)  5 = celestial (advanced sun)  6 = Loran- A  7 = Loran-C  8 = Omega or VLP  9 = Satellite

* As defined for navigation/bathymetry data received in 1982.
** As defined for navigation/bathymetry data received in 1987.

U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/2000/of00-352/htmldocs/mrgmrg.htm
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Last modified: 14:32:38 Wed 10 Oct 2001
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