recording land channels, geophones and cables, air guns, streamer positioning equipment, and downhole equipment lease pool, heli-pickers and related equipment. In addition, the company also provides systems integration, hardware and software maintenance. Its Seamap Equipment Sales division markets products to the marine seismic industry, including GunLink seismic source acquisition and control systems, BuoyLink RGPS tracking systems. References External links Official Website Companies listed on the Nasdaq Companies established in 1987