Retrieving Seismic Airguns (image) US Geological Survey Share Print E-Mail Caption USGS personnel on the deck of the R/V Hugh R. Sharp during retrieval of seismic airguns. The streamer that receives the seismic signals generated by the airguns is towed behind the ship and is here shown spooled on the winch at right. Credit Carolyn Ruppel, USGS. Usage Restrictions Public Domain, please credit: USGS. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.