Heading Sensor Model 318

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Item Heading Sensor Model 318
Item code
Description Heading Sensor
Manufacturer Digicourse
Circa 1975
Donor Digicourse
Location Bureau of Economic Geology - The University of Texas at Austin
Serial number
Taxonomy GSH669

The now well-known optical compass, first produced in 1972, was originally intended for shipboard use, binnacle mounted with a remote readout. By 1974, it had been developed into a small, rugged underwater sensor for use by the U.S. Navy in towed arrays. A major seismic contractor became aware of the compass at this stage and worked with DigiCourse to quickly adapt it for use in a streamer cable. The compasses were successfully used in the first commercial 3-D marine survey in the early summer of 1975.